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DIYPNP Bosch 55pin Unassembled Kit

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DIYPNP Bosch 55pin Unassembled Kit

Complete kit contains everything you need to assemble a DIYPNP ECU for cars with the 55 pin Bosch connector. Includes MicroSquirt module and case. Fits many European cars and a couple others. This application list is based on US market models; there are also some European market cars that used this connector not listed here.

Available Features / Technical Specifications

Based on MS2/E Firmware Version 3.0.3 or later

 Note:  Some of the features listed above use the General Purpose Inputs/Outputs.


Application List

A partial list of what cars this connector fits is shown below.  For more details including a list of vehicles we have detailed documention and startup maps for, click here.

Make Model Engines From To Notes
Audi S4 all 1992 1994 *Flywheel trigger & 5 cylinder COP may not be compatible with current firmware
Audi S6 all 1995 1995 *Flywheel trigger & 5 cylinder COP may not be compatible with current firmware
Audi Quattro V8 1990 1994 *Flywheel trigger may not be compatible with current firmware
BMW 325 M20 1987 1992 * Check before ordering - a few 1987 and 1988 models used a 35 pin connector.
BMW 525 M20 1989 1990  
BMW 535 M30 1989 1993  
BMW M5 S38 1991 1993  
Hyundai Scoupe all 1992 1995  
Peugeot 405 all gasoline 1989 1992 Fits many European models not listed
Porsche 911 all 1990 1995  
Porsche 944 S2 1989 1991  
Porsche 968 all 1992 1995  
Volvo 960 B6304F 1992 1995 * Later 1995 models are OBD-II and use a different connector. Check before ordering.


Since many of these cars used a 3 wire IAC valve, we've included all the parts needed to construct a 3 wire IAC circuit in this kit on the adapter board.

Also many models on this application list use an internal ignitor so this kit includes one BIP373 internal ignition driver.  You can optionally add up to three more to your DIYPNP for direct-fired wasted spark or COP conversions.



This kit:

DIYPNP B55 MegaSquirt EMS Kit

Contains everything you need to build an ECU like this one:

DIYPNP B55 MegaSquirt EMS Assembled


This board supports up to four BIP373 ignition drivers which are not included in order to keep your cost down since most of you won't need them for running your stock setup. If your application does require internal ignition drivers (again, most do not) you can add BIP373 ignition drivers to your kit.  We offer a DIYPNP BIP373 mod-kit which includes the BIP373, Heatsink, and mounting hardware here.



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