Ms42 to ms43 conversion. With full support for MS45, MS43, MS42, MS41, and ME9.
Ms42 to ms43 conversion During the next steps and pages you will often read the term "software version". Aug 8, 2019 · Here is an overview of original, virginized files for the MS42 and MS43. It does require some hand tweaking but it's manageable. The wires between the connectors must be connected in parallel according to the enclosed instructions. Apr 7, 2017 · Hello to all I recently picked up a spare MS42 ecu and flashed a virginized 512kb file and synced the EWS and car started up perfectly. Learn about MS42/MS43 engine management systems, including power, air, fuel, ignition, and emissions. No more needing to go to a shop for tuning or waiting around for your tuner to email you that file. BMW M52TU and M54 petrol engine fault codes. From a tuning perspective what will be better? Keen to hear Bypass EWS immobilizer issues with our BMW MS42, MS43, and MS45 DME Immobilizer Off (IMMO OFF) service. some cleverness, patience and probably 20 hours, I managed to turn the . It have been running an ms42 on a b30 with a b28 tune for a while but I wanted to finally open up the full potential and also ditch the cable throttle body that sucks. Air flow requirements change depending on weather and you will see variances in the peak maf readings. Nov 24, 2011 · 06/99 328I | 124K MILES | M54B30 MANIFOLD SWAP | MS42 -> MS43 DME CONVERSION | STILL JUST AS SLOW AS EVER 01-04-2014, 08:01 AM #31 slickrick83te Member. The MS43 DME (Drive module electronic) is the engine management computer for the E46 (2001-2006) BMW 3-series, along with many other BMW vehicles of the same era, including 5 series, x3, and x5 models powered by the M54 engine. Only way that is drive by cable during driving is when it is in limp mode. The problem is that soft is "read only" so I can't modify it so I'm trying to adapt the M54B30 soft myself on another ECU. He has a M50 intake manifold aswell. Oct 12, 2013 · There are free Damos files for MS42, MS43, MS45 available for free on the internet. 1 If they are out there please LMK. Jul 4, 2023 · Logger definition file matching your ECU family (MS41, MS42, MS43) Binary definition file matching your ECU (0110C6, MS430069, etc. Followed it to the T! Up until the Hi Guys, I'm new to this DME tuning world. Its the European equivalent to ECU. I changed my M52TUB25 internals to M54B30 parts (camshaft, crankshaft, pistons, connecting rods, valves, springs, etc. These kits are made with high temperature automotive grade wiring that resist oils, grease, and acids. Found that there didn't appear to be a XDF for the MS42 on the forum. 0 MS45. These kits are made with high temperature automotive grade wiring that resist Why are doing such a conversion? It's not my car, i'm just helping him. Top tjwasiak Post subject: Re: MS42--->MS43 Conversion problems Posted: Thu Jan 14, 2021 1:33 pm Experienced Joined:Posts Description M52TU/M54/S54 Adapter for E46 M52TU must use MS42 DME M54 must use MS43 DME (MS45 option now available!) S54 must use MSS54 or MSS54HP DME These Plug-and-Play wiring solutions will make your engine conversion a breeze. All crimp terminals and connectors are new. Please note our disclaimer Do not, under no circumstances, upload any copyrighted tuning files here. Apr 16, 2021 · The point of this thread is to document some differences that should be known if one wishes to retrofit a Siemens MS43 DME into a vehicle that originally came with a Siemens MS45. I’m in the swapping stage of the build. The task of the first processor is to control: • Engine Load • Electronic Throttle • Idle Actuator • Ignition • Knock Control The task of the second processor is to control: • Air / Fuel Mixture • Emission Control • Misfire Detection BMW Siemens MS41, MS42 and MS43 Fault codes. M52tub25 and M54B25 have the same throttle body size. Feb 6, 2011 · 06/99 328I | 124K MILES | M54B30 MANIFOLD SWAP | MS42 -> MS43 DME CONVERSION | STILL JUST AS SLOW AS EVER 02-11-2011, 02:15 AM #20 TerraPhantm Member BMW CCA Member Apr 4, 2025 · Hello all, I’m currently doing a turbo build to my 00 328i M52TU. Aug 16, 2022 · ms42 to ms43 upgrade help Jump to Latest 573 views 0 replies 1 participant last post by genad Aug 16, 2022 G Oct 28, 2012 · Actually converting the MS43 was my second conversion. 4 (ZF 5HP19) GS20 (GM 5L40/5L50) GDSMG2 (Getrag SMG II) This tool is completely free of charge, though if you are using it commercially consider a small donation to support this project. From launch control to burble tunes, we can do whatever you need. So what's the big deal? This information was available for the past 5 years. net And sometimes https Description M52TU/M54/S54 Adapter for E28 M52TU must use MS42 DME M54 must use MS43 DME (MS45 option now available!) S54 must use MSS54 or MSS54HP DME These Plug-and-Play wiring solutions will make your engine conversion a breeze. The task of the first processor is to control: • Engine Load • Electronic Throttle • Idle Actuator • Ignition • Knock Control The task of the second processor is to control: • Air / Fuel Mixture • Emission Control • Misfire Detection MS42/MS43 Engine Control Module : The Engine Control Module (ECM) features a single printed circuit board with two 32-bit microprocessors. It is the European equivalent to ECU. It is suggested to use one that only reaches 5 amps maximum. 2 MSS54 MSS52 LINK TO MS42 MS43 MS45 M5. Now you don’t need to look for files with map descriptions for different firmware versions. com Mass Air Flow Sensors To translate the active DTCs to the equivalent OBD2 P code the ecu uses a set of variables c_dtc_ [dtc name]_x that specifies the corresponding OBD2 P code. This was the primary reason we created simplified variants for MS42. This is to optimize the firmware file so the M54B30 intake manifold works at its best. Oct 13, 2021 · I have a 323 that I'm finally doing an ms43 conversion on. 0 (ZF 5HP19) GS8. automotive-connectors. This is where I’m having my issues. 0 / MS45. I've posted a copy of the MS43 (and an MS42) XDF on my google drive along with a . Can someone educate me on ms45. Aug 23, 2023 · You need to find the wiring diagrams for the MS43 DBW pedal (and of course a pedal + harness) wiring harness is different between MS42 & MS43 so use the B30 harness or get the Condor harness Jun 27, 2012 · Welcome! The purpose of this thread is to discuss and document the possibility of retrofitting a 323/328 equipped with the Siemens MS42 DME with an MS43 There are multiple ways to accomplish this conversion and we will outline a few here. com Ms42-ms43 conversion videos: / @ucq8oevqqljct7w6vvnyc-rq I want to also personally thank those who helped me throughout this process and life struggling time May 14, 2017 · Hello Fanatics, We, the MS4X dev group, are proud to announce the release of a new flasher for Siemens MS42 and MS43 ECU series :excited: The best thing first: this flasher significantly boosts read and write speeds for both, partial (30 seconds) and full (2 minutes) flashes. I swapped over Intake manifold, Intake Camshaft, Throttle body, DME, Gas Pedal, Intake boots, DISA valve, and MAF. Mar 14, 2011 · Hi, i have a 1998 E39 528i Automatic, the engine was bad, s0o i swapped in a Motor with Manual transmission, Harness to the DME box, plus the DME, EWS, and Transponder chip from the key, Differential and Drive shaft from the Donor Vehicle. Many of the parts required for a conversion can be purchased used, while some should only be bought new. With this system, it's fully plug and play. 2 ME 5. Full Documentation avaialble [HERE]. I had a 2. I have in the past paid for tuning, but would like to get this engine to run off the ms43 properly without spending more on something I am sure I can figure out. These dual vanos engines are getting cheaper and gaining popularity in getting them swapped into E30 , E36 or some other BMW. That's what I use to do my coding/tuning so what information am I holding? Nov 23, 2019 · Now, I am looking to see if someone can integrate the airmass/intake model/intake air map values from the MS43 M54B30 and fully integrate the applicable values to the corresponding maps on the MS42 DME. Oct 17, 2025 · Why are doing such a conversion? It's not my car, i'm just helping him. Includes 6X EGT inputs and 6x Ignition drivers. The task of the first processor is to control: • Engine Load • Electronic Throttle • Idle Actuator • Ignition • Knock Control The task of the second processor is to control: • Air / Fuel Mixture • Emission Control • Misfire Detection BMW Siemens MS42 to MS43 Swap Conversion E46 -DIY Comprehensive- Siemens MS43 | Full Read | Complete control unit image | JMGarage Flasher | BMW M54 BMW E46 EWS-3 Start Value Synchronization With INPA Dec 31, 2010 · I am able to program MS42 and MS43 engine computers from E46 so that M52TU and M54 engines can be swapped into other chassis with minimal wiring effort. Full control, advanced features, and easy installation for MS42/MS43 ECUs. The MS43 has two time values (in seconds) for controlling the electronic fuel pump relay before starting and after stopping the engine: Custom tuning for all BMW MS42 MS43 and MS45. So much to cover, SO LITTLE TIME! In this video, I go over the steps I took to tune my turbocharged E46 by myself on the STOCK MS43 DME/ECU*******Time Stamps 280 likes, 21 comments - shawnoddou on November 2, 2023: "MS42 to MS43 conversion by @hucci. So guys, as more and more people go FI the more people try different MAF sensors. cant seem to find, or figure out the pin assignment on the MS42 plug. Will look. All of the following programs will work for MS42 & MS43 ECUs. Also it doesn't need desoldering of the ignition coil drivers (IGBTs) from your ECU like the VAG / R8 ignition coil conversion. Click to expand The sensors can be read by INPA, RomRaider, TunerPro or any other logging program. Using the . Beside that Feb 14, 2025 · We are proud to introduce our new drop in ecu collection. TIA for any help. 1 DME's. Top tjwasiak Post subject: Re: MS42--->MS43 Conversion problems Posted: Thu Jan 14, 2021 1:33 pm Experienced Joined:Posts The term (X*0. 2, simply order the preferred ecu and a full tuned and ews deleted ecu will arrive at your door. I'd like to see it. 1 ; utilisé exclusivement en Amérique du Nord pour tous les moteurs M54 et les moteurs M56 SULEV produits après 03/2003 ; sauf les modèles XI Hey all. A2L file into an XDF. 3 roadster from the stock M52TU to a larger, more reliable, and easier to maintain M54 int At this moment our application supports Bosch 413, Bosch 506, Bosch ME7. Link to my google drive The BMW 24-pin X60002 connector is the Peripherals connection of the MS42 / MS43 / MS45 / MSS54 DME found on the transmission harness. This connector kit will be useful if you are building a new chassis wire harness or performing an engine swap while reusing the engine wire harnesses. 1, we don't plan to release a version for this anytime soon like we have for MS42. garage for the 46🔥 the MS43 (came in 2001-2003 e46 325’s and 330’s) is the best bmw ECU for tuning and better for the current set up. DME stands for Digital Motor Electronics. It's absolutely crucial to know the software version of your ECU because there are major differences between them. Just ignore this to get the voltage conversion. Or convert to MS43 which gives options for bigger TB's. These wiring kits use all new components. I know Nick G. I also have done M50B25 intake mod DISA delete Icv delete Evap delete Sap delete This page was last edited on 15 October 2025, at 12:35. Dec 28, 2023 · The way it's written makes it look more confusing than it should be, you could easily think left vs right tables could be MS42/43 bolt-in coils vs MS45 pencil coils, or MS42 vs MS43. only thing I am missing is how to rewire the connection for the throttle body. 2 GS20 BMS46 GS860x EDC15C DDE4 MSS52 MSS54 Aug 8, 2013 · If you're looking for simplified version of MS45. Bin downloaded from an Jun 25, 2025 · Siemens MS42 (M52TU) Siemens MS43 (M54) GS8. M52TU must use MS42 DME M54 must use MS43 DME (MS45 option now available!) S54 must use MSS54 or MSS54HP DME These Plug-and-Play wiring solutions will make your engine conversion a breeze. Jan 29, 2025 · Tags ms42 ms43 software vin vin2hex Jump to Latest 951 views 6 replies 3 participants last post by Bali Jan 29, 2025 emdzej Discussion starter 5 posts · Joined 2022 #1 ·Jan 26, 2025 Hey, This harness was primarily designed for swapping a BMW E46 323 or 328 from a MS42 DME to MS43 DME while retaining the original M52TU engine wire harness, largely known from O’LearysGenuineBMW’s YouTube video, where you will depin the original 10-pin M52TU / MS42 Throttle Body wiring and run this new 6-pin M54 / MS43 Throttle Body wire harness. If I go the ms43 route I will use m54, throttle body, maf, throttle pedal, b30 injectors etc. Continuity tested Aug 8, 2013 · Similar to our MS42 efforts, we decided to release a simplified version of the MS43 firmware. May 28, 2023 · Mechanically this MS43 swap will convert your sloppy pedal/sluggish E46 and lackluster DME (no knock to the development team, your work is great) into a more peppy feeling car and electronically allow for more tuning capability. I decided to go all out and upgrade the entire system with b30 parts since all the intake parts are larger. This means MS42->MS43 conversion. Jul 6, 2021 · Pin 4 goes to an external ground on chassis Pin 5 goes to black wire on MS43 harness MAF connector Pin 6 goes to red wire on MS43 harness MAF connector You can use a Bosch 3 pin EV1 Male Connector to make an adapter to plug into the stock harness. E46 323ci stock power 178 hp & 239nm, Ecu swap MS42 to MS43 and intake system with Intake cam fromM54b30 engine Our MS42 to MS43 easy swap adapter has been installed in this car You can order Hello guys, hope ur doing well. 5 and swaped a 3. Jan 16, 2019 · I'm on that MS42 ISN Location is 0x3EDE - 0x3EE3 MS42 VIN Location is 0x3C4A - 0x3C56 Use BMW VIN to HEX to calculate your VIN. Both options are valid and you can decide whatever suits your needs better: Option A: Maintain M52TU engine wiring and work with adapters Option B: Update engine wiring to M54 and Jul 8, 2023 · Due to the costs of replacing these components I found it easier (and cheaper) to just go the MS43 route. For fuel, ignition and VANOS, the default MS43 firmware (HW7545150 & HW7572342) has 28 tables for basic operation which should be tuned for optimum operation. EWS delete included for full plug and play functionality. I am going to transplant a m54b30 manifold, and intake camshaft on to my m52b28tu. Hello all, I need the blue and red google docs spreadsheets for MS42 to MS43 but all the links are dead in the old posts. Second way is to apply the patch manually with a HEX editor. Wire in the throttle body, you can remove all ten MS42 wires from connector X60003, then directly swap in the MS43 pins. Unlike with earlier versions of this kit, you now have no need to open the ECU and solder and de-solder certain pins - everything is “plug and play” and can easily be returned to standard at a later date if required. Includes workshop tips and tools. 0 in and i have the 2. Description M52TU/M54/S54 Adapter for E34 M52TU must use MS42 DME M54 must use MS43 DME (MS45 option now available!) S54 must use MSS54 or MSS54HP DME These Plug-and-Play wiring solutions will make your engine conversion a breeze. I used Winkfp and reflashed the ecu with another firmware and was able to add my cars VIN number onto the ecu My question is, how can i use Winkfp to simply change the VIN number on the ecu without having to Sep 12, 2011 · Won't be til Feb 2013 tho. Jun 13, 2025 · By simply splicing 4 wires together across DME plugs X60003 and X60004, we convert the MS42 harness to a MS43 harness. This time the story about classic of BMW engines. Can some one help me with a ms43 EWS deleted map for a m52tub28 , i just finished the ms42 to ms43 conversion and need some more shit done to the map as it has b30 cams ported heads and a Feb 20, 2008 · Welcome! The purpose of this thread is to discuss and document the possibility of retrofitting a 323/328 equipped with the Siemens MS42 DME with an MS43 DME. Jun 16, 2015 · Benchflash harness for MS42, MS43, MS45, ME7. Using . The MAF sensor module comes preinstalled in a 82mm/90mm (ID/OD) housing and has a 5 pin connector with the following pinout: Pin 1 - IAT sensor output (not used on MS42 or MS43) Pin 2 - voltage input 12V (red/white) Pin 3 - common ground (black) Pin 4 - voltage Aug 19, 2013 · The DME and Injectors relay is already integrated into MS42/MS43 harness. xls. Esto es lo que creo saber: querrás convertir de MS42 a MS43 Necesitas encontrar los diagramas de cableado del pedal DBW MS43 (y, por supuesto, un pedal + arnés) el arnés de cableado es diferente entre MS42 y MS43, así que usa el arnés B30 o consigue el arnés Condor necesitarás obtener un DME MS43 con eliminación de EWS - Kassel Performance cooling system and the sedan has extreme chassis problems Quest Bavarian Mechanic and 14 others 15 16 1 MS43 and M54 installation in a '00 coupe originally equipped with an MS42, with experiences shared from a '99 sedan M54B30 swap Tyler O'Leary Moderator Have done the conversion 4 times now, it's Jul 23, 2015 · I got a soft for this conversion for MS43 from the company where I bought the MS42 > MS43 conversion kit. Apart from messing with the wiring we also had to switch the throttle body as well as the pedal for it to work🤝 #e46 #m52tub25 #forcedinduction". com Apr 16, 2021 · MS42 ; utilisé dans les moteurs 323 et 328 M52TU MS43 ; utilisé dans les moteurs 325 et 330 M54 nord-américains jusqu'à 03/2003 ; tous les 325xi et 330xi MS45. I think from the text above that, MS43 can do multispark? Not like multiple plugs per cylinder lol, but multiple ignition events per combustion event? Today we tackle the MS42 to MS43 swap. Must have already had the wiring change done. 00 We do offer an ECU benchflash harness to reflash your DME outside of the car. bin file that appears to mate fairly well with the data. I still think that 80mm throttle bodies are much bigger than what is necessary on an Sep 7, 2018 · Both, the MS42 and MS43 share the same pinout at connector X60002, which is the second connector from the right looking at the ECU mounted still in car. 2, MSS54/HP, and MSS52 $100. MS42 M52tu engine also has drive by wire throttle operation but the sensor is located on the throttle body itself and the sensor is driven by cable from the pedal. Aug 14, 2023 · For reading and writing the memory (flash) chips on the ECU you have to use specialized tools. 1 to ms43 conversion. ) 1 Ignition coil Cyl 2 2 Ignition coil Cyl 4 3 Ignition coil Cyl 6 5 Fuel injector Cyl 2 6 Fuel injector Cyl 1 8 Air Flow Meter (HFM) 10 Coolant Temperature Sensor 11 Tank Pressure Sensor The gas pedal - DME is stock uncut e46 harness, to get the m54 throttlebody i cut the 10 wire plug (m52tu) and soldered 6 of those wires to a 6pin m54 throttlebody plug (youtube ms42 -> ms43 tutorial) Wrong maf/pedal/throttlebody? (All sourced separately, m52tu maf) Is the DME bad? Jan 25, 2025 · Araçta MS42'den MS43'e geçtim ancak hata kodları alıyorum, araçta her şey çalışıyor. Oct 26, 2024 · Public group 72K Members Bajo Srdanović M52tu/M54 Engine Issues/Mods/Solutions Oct 27, 2024 Hi guys I have 99 e46 m52tub25 ms42,and I want to change my wiring to ms43 using mine wiring from ms42. 0048828125) is used by MS42 and MS43 to convert the ADC input signal into voltage. These kits are made with high temperature automotive grade wiring that resist Oct 21, 2017 · I put the DME ews and key cylinder from the 330 in the 323 and i looked up on the forum the ms42 to ms43 wiring conversion (this one) to get the engine talking to the cluster and the starter etc. I am wondering if the most efficient way is to stay ms42, or to convert to ms43. MaxxECU RACE with OEM Harness Adapter: Ultimate Integration Solution Experience the pinnacle of OEM harness adaptability with the MaxxECU RACE - The ultimate standalone ECU solution. Key features: On-the-fly checksum correction before flashing Checksum correction for local files You have BMW E46 MS43 or MS42 you bought ECUMASTER EMU BLACK and you want to start the equipment without making a BEAM by "professionals"? The kit consists of: - a set of connectors, - intermediate harness between connectors - harness adapter. We will delete them immediately! Siemens MS42 Files The following files are made for M52TUB28 engines. -Sluit het gaspedaal aan door pinnen rechtstreeks in de MS42 DME-connector X60004 te plaatsen. But now im going for an ecu swap. I understand both will probably have pros and cons. With full support for MS45, MS43, MS42, MS41, and ME9. Some background: DME stands for Digital Motor Electronics. 1/MS45 DME. The task of the first processor is to control: • Engine Load • Electronic Throttle • Idle Actuator • Ignition • Knock Control The task of the second processor is to control: • Air / Fuel Mixture • Emission Control • Misfire Detection MS43 related: Experience on standard or near standard Euro 330ci in cool climate and with 99 RON fuel suggested sporadic pulling of timing here and there up to a few degrees is common but rarely sufficient even in hard track use to produce more than 1 degree of learned ignition retard from the 98 RON base map. An alternative is to use an E46 Camshaft position sensor for the plug. Discover more now! Nov 8, 2025 · Upgraded Fuel Pumps Under some circumstances like a forced induction conversion the OEM fuel pump can't deliver enough fuel to the engine and needs to be upgraded. 1 ME 5. 06/99 328I | 124K MILES | M54B30 MANIFOLD SWAP | MS42 -> MS43 DME CONVERSION | STILL JUST AS SLOW AS EVER 09-12-2011,08:07 PM #15 TerraPhantm Member BMW CCA Member Join Date Jul 2007 Location Philadelphia, PA Posts 5,660 My Cars 2005 M3 & 2004 330i Originally Posted by Plug and play standalone ecu for the bmw E46 6 cylinder engine with M52TU or M54 with MS42 & MS43 ecu's, Turbo conversion ITB's Alpha N, Fly by wire compatible, built in wideband and knock detection, Auto Transmission compatible, can bus. All in all the car feels much smoother and a Dec 6, 2012 · MS42 -> MS43 conversion using the MS42 engine harness?? i think i have every wire figured out. Luckily there are a variety of flashtools available for free these days. I applied the MS43 ECU but I am using the original wiring from the MS42 car. US and EU differ in diagnosis configuration. (E34, E36, E38, E46. Jun 10, 2021 · Tags conversion help ms42 ms43 Jump to Latest 1. With optional transmission harnesses, you can even I wanted to swap an ms43 into my 1999 328i 5 speed sedan issue is I needed to add a electric throttle body and electric pedal. Customization is available once added to the cart. Thank for the reply, i will try it! He has seen too many vidios that the electric throttle body is mich better. VAG coil conversion harness for ms42 and ms43 $ 450. 1 is way more complex than MS42 and MS43, there aren't duplicate maps all over the place regarding VANOS advanced or delayed. 'We decided to delete downloads to all Mar 20, 2021 · I see plenty for the MS43, but haven't seen any for the MS45. 00 Add to cart Category: Uncategorized MS42/MS43 Engine Control Module : The Engine Control Module (ECM) features a single printed circuit board with two 32-bit microprocessors. This is a demonstration of the harness for sale: Capable, of reading full/partial DME/ECU Units: Bmw Vehicle Compatability: MS42 MS43 MS45. I really do feel I should mention again the fact that the M52TU has been known to take a pretty significant amount of boost. Features: Removes the stock air-flow meter (MAF) and replaces it The finished wiring for the electronic throttle paddle will look something like this when finished: Hardware Install Engine Wiring Modification For M52TU to work with MS43 ECU you have two options for the wiring. Trying to run an S52 with MS43 in an MS42 equipped car. 5 ms45 harness all plugged in to all sensors and going to my tuned ms43 ecu and im getting a no MS42/MS43 Engine Control Module : The Engine Control Module (ECM) features a single printed circuit board with two 32-bit microprocessors. In the future, I plan to convert the intake system of the BMW Z3 2. And check your ECU EEPROM as well. MS45. I use excel to more or less convert it in bulk. 9K views 9 replies 4 participants last post by Southpole560 Aug 8, 2022 MeSmallBrain Discussion starter 19 posts · Joined 2021 #1 ·Sep 14, 2021 Apr 4, 2025 · This means MS42->MS43 conversion. Please note our disclaimer Just use the most suiting file according to your needs: Notes: LHD (left hand drive) and RHD (right hand drive) differ in exhaust gas temperatur models because of the different catalytic converter configuration. We have the solutions on how to run engines StandAlone for engine swap projects with the stock engine management system, independet of all other systems. My only problem is how can i bypass the clutch switch to BMW Siemens MS42 to MS43 Swap Conversion E46 -DIY Comprehensive- Learning ECU Repair: The Basic Knowledge You Need #ecurepair #learning Doing an automatic to manual conversion on a BMW E46 is quite easy when you have all of the correct parts, such as a Manual Transmission Wire Harness. May 6, 2024 · The throttle body does matter - the throttle body will need to be paired to the DME, so if keeping your current MS42 DME you need to keep the original TB. 2. Does anyone know of a way to copy maps from ms42>ms43? Oct 5, 2025 · BENCH Wiring Kit For BMW M54 M52TU S54 S62 M62 M62TU ECU DME ms42 ms43 mss54 letthebasskick04 (1502) 100% positive MS42/MS43 Engine Control Module : The Engine Control Module (ECM) features a single printed circuit board with two 32-bit microprocessors. But I did find posted an A2L file. Unlock your BMW E46's potential with RM Primis BMW E46 Standalone ECU. The BMW 40-pin X60004 connector is the Vehicle connection of the MS42 / MS43 / MS45 / MSS54 DME found on the chassis harness. Aug 8, 2013 · To prepare for this, we began by researching the differences between the stock tunes for MS42 and MS43 (since they’re very similar in architecture and covered a wide range of engines). 60. Looking up the part number for a blank MS43, the ETK indicates that only M54 cars got it. Please note our disclaimer Make sure to flash this without bootmode, or correct your VIN before in case you want to virginize the ECU. on green 4 pin relay (61368366600) 85-86 is a coil, so pin 10 will go to one of them and other one goes to bat+ then Pin 30 is bat+ and 87 goes to power fuel pump. It is intended to be used with any 12v power supply. #ms41 #ms42 #ms43 #ms45 Jun 6, 2011 · 06/99 328I | 124K MILES | M54B30 MANIFOLD SWAP | MS42 -> MS43 DME CONVERSION | STILL JUST AS SLOW AS EVER 06-06-2011, 08:00 PM #3 TerraPhantm Member BMW CCA Member Description M52TU/M54/S54 Adapter for Z3/Z3M M52TU must use MS42 DME M54 must use MS43 DME (MS45 option now available!) S54 must use MSS54 or MSS54HP DME These Plug-and-Play wiring solutions will make your engine conversion a breeze. For reasons of such negations […] Dec 10, 2024 · 1 X60001 - Voltage Supply 2 X60002 - Peripherals 3 X60003 - Engine 4 X60004 - Vehicle 5 X60005 - Ignition Description M52TU/M54/S54 Adapter for E21 M52TU must use MS42 DME M54 must use MS43 DME (MS45 option now available!) S54 must use MSS54 or MSS54HP DME These Plug-and-Play wiring solutions will make your engine conversion a breeze. I have heard a lot of foul words regarding Siemens control units from people performing diagnostics. I did the MS42 first. Siemens MS42 Files 01100AD E36/7 Z3-series M52TUB28: MS42_Z3_28i_01100AD010000_Virgin. net - the ultimate Siemens MS wiki ::. 1 ECU's. During the process of converting to MS43 and reusing the original MS42 engine wire harness, there are four wires that need to be connected from the DME X60003 connector on the engine harness to the DME X60004 connector on the chassis harness for the battery charge indicator, oil level indicator, oil pressure indicator, and starter feedback signal. Although MS45. Aug 18, 2021 · Not according to MS43 system technical documents. ) and really felt the difference between my old engine and this one. May 25, 2018 · I put the DME ews and key cylinder from the 330 in the 323 and i looked up on the forum the ms42 to ms43 wiring conversion (this one) to get the engine talking to the cluster and the starter etc. Custom conversions Changing the electronics components from how things work from the factory These custom conversion kits allow you to adapt other parts to your car to create a perfectly suited setup for your needs. 2, Siemens MS41, Siemens MS42, Siemens MS43, Siemens MS45, Siemens MSS50, Siemens MSS52 and Siemens MSS54 firmware files. com Suspension Tech and Handling sponsored by eBMWParts. Why are doing such a conversion? It's not my car, i'm just helping him. With corresponding bin file it will tell you everything and about every map what it is. The MaxxECU RACE adapter for the MS42/MS43 BMW's can only be used with MaxxECU RACE. 0 DME and Drive By Yes ve is a much more accurate measurement of the power an engine is making. Followed it to the T! Up until the tuning part. Wiring: https://tulayswirewerks. For clone this type of ECU i'm using jmgarage flasher and website ms4x. This system seamlessly connects the MaxxECU RACE directly to the OEM BMW E46 (and others) MS42 or MS43 ECU harness, providing full control over engine management. There is a video on youtube for that but I wanted to check here first 6 Member seeking advice on changing wiring from ms42 to ms43 for e46 m52tub25 engine In this video i want to show you how to make Full Clone ECU DME MS43/MS42 from BMW E39/E46/X5E53. Jun 28, 2020 · Hey guys, I also am looking to use ms43 to control an m52tub28. Yesterday I took the opportunity to join an interesting case: E39 with M54B25 engine and, accordingly, MS43 Siemens control unit. First way is the recommended way, upgrade to firmware version 0110C6 on MS42 or 430069 on MS43 and use the MS42 / MS43 Community Patchlist. The bootloader area containing EWS key, UIF, etc can ONLY be overwritten in bootmode, regardless of which software used. I bought MS43 dme with its own ews3, key M5x To S58 Intake Conversion PMAS HPX MAF Sensor Conversion Siemens MS43 Extended Load Limit Siemens MS43 Retrofit MAP Sensor Use Rear O2 Inputs For Analog Sensors Additional Stuff: 3D Printable Parts Alpina Firmware Preservation Aftermarket Upgrade Sensor Data Bosch Cluster Shiftlight Retrofitting CanTCU Integration (8HP/DCT Swaps) This is a conversion software programming service for any BMW E36 Z3 Series / E46 3 Series / E39 5 Series / X3 / X5 / Z4 with M52TU / M54 and M56 Engines equipped with MS42 / MS43 / MS45. There were three versions of the Jun 14, 2025 · OF splits het MS43-harnas rechtstreeks op de MS42-draden met behulp van een van mijn schema's. Dec 31, 2024 · Hey peeps. Aug 14, 2023 · An M52TU engine always uses the MS42, the newer M54 comes with MS43 or MS45 depending on production date and area. in this video we wanted to show you how to easily swap ecu siemens MS42 to a newer MS43 ECU using our set of adapters and a prepared software. ) Fresh read or latest known binary from the ECU you are logging 90° angled USB extension cords are a good add-on if you want to have your computer sit next to you on the passenger seat. There were three Jul 13, 2013 · an double tons of fun doing this!! lol and if you are gonna FI your car, like me (ESS SC Stage 2), the MS43 win over MS42, you can squeeze a lot more HP in the MS43. Description M52TU/M54/S54 Adapter for E36 M52TU must use MS42 DME M54 must use MS43 DME (MS45 option now available!) S54 must use MSS54 or MSS54HP DME These Plug-and-Play wiring solutions will make your engine conversion a breeze. The E39 5-series was already out of The MAP conversion is a simple, cheap and reliable alternative which takes less than 10 minutes to convert to. Jan 21, 2011 · Main difference between MS42 and MS43 is drive-by-cable vs drive-by-wire, and the M54 was BMW's first engine with DBW. A cheap alternative for the HPX PMAS MAF is the Audi RS4 B5 MAF sensor manufactured by Bosch and is able to measure upto 1800kg/h. I will start by saying I’ve done the full ms43 conversion in accordance to Tyler O’Leary’s excellent video on YouTube. 1 ME7. 2 ME9. Oct 30, 2025 · Here is an overview of community made files for the MS42 and MS43. 0 M52TU. the whole lot. It will come with instructions and links for the necessary software. Oct 21, 2016 · To get that conversion right, i tend to think its better to create a new thread and split it from the biggest thread. bin E39 5-series M52TUB25: MS42_523i_01100AD010000 Jun 3, 2019 · Here is an overview of community made files for the MS42 and MS43. 1 to MS43 conversion is not reasonable for me. However, there are multiple versions of the E46 manual transmission wire harness; MS42, MS43 with bolt-in coils, MS43 with pencil coils, and MS45. Most connectors and matching terminals can be bought at https://www. Only for MS43/MS42 years 1999-2003 You may ship us your stock ECU to be tuned and shipped back, or you may purchase a fresh ECU for $50 more to have tuned and shipped to you. Aug 4, 2020 · Hello friends I'm putting an M54B30 engine in my Bmw Z3 2. Aug 8, 2022 · Tags ms43 tuning throttle body turbo e46 Jump to Latest 3. This connector kit will be useful if you are building a new chassis wire harness or performing an engine swap while not reusing the transmission wire harnesses. sells a different Jul 15, 2018 · I did an ms42 to ms43 conversion and no problems as I had ews delete. The more MAF sensors are available, the bigger the confusion. Swipe through the photos to see each Stage's features and requirements. The full list of DTCs and their corresponding OBD2 P code can be found here: The MAP conversion is a simple, cheap and reliable alternative which takes less than 10 minutes to convert to. . The Infineon C167 processor used in the MS42 and MS43 ECU has an on-chip bootstrap loader which allows a custom programming routine to be uploaded to RAM which bypasses everything on the flash memory. Simply replace the stock ECU and lambda sensor, complete minor wiring, and you’re ready to go. 6K views 0 replies 1 participant last post by FredericksburgProjects Jun 10, 2021 FredericksburgProjects Discussion starter 2 posts · Joined 2021 #1 ·Jun 10, 2021 Mar 1, 2009 · 323Ci (M52tuB25) to M54B30 Complete Conversion, with MS43. Can anyone here provide me with the pins to connect the electronic accelerator pedal and the throttle body transformation? Thank you all MaxxECU RACE OEM Harness Adapter for BMW M52TU/M54 Engines Plug-and-Play Solution: Designed for BMW M54 engines with OEM MS42/MS43 DME and harness. 1 ME 7. :: Visit MS4X. Note: This conversion though is mainly intended for M52TU and M54 engines that still have the old style ignition coils that are bolted to the valve cover (BMW 11121432928). Post Pics when you can. Plug-and-play solution for E46, E39, X5, Z3, and Z4 models. . I followed the swap guide here (MS42->MS43 Conversion Information and further upgrades) What I did parts wise: M52 Electric Throttle Pedal, fit perfectly. Aug 3, 2010 · 06/99 328I | 124K MILES | M54B30 MANIFOLD SWAP | MS42 -> MS43 DME CONVERSION | STILL JUST AS SLOW AS EVER Quick Navigation 1999 - 2006 (E46) Go Top General BMW and Automotive Discussion sponsored by Intercity Lines Track, Auto-X & Drag Racing sponsored by Bimmerparts. ktbxlcpfcbpkhjqhjqfcgauqrutuzknplmcypaoixvynycbszbncjtkkjbhzuskjtmrii