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DIYBOB Breakout Adapter - Bosch 55 pin
DIYBOB Breakout Adapter - Bosch 55 pin

DIYBOB Breakout Adapter – Bosch 55 pin


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SKU: DIYBOB-B55K Categories: , , Brand:


The DIYBOB is an exclusive breakout board from that allows you to easily build professional adapter harnesses to connecting the engine management system of your choice to a wide variety of cars.  The DIYBOB includes an OEM style connector, circuit board, and an anodized aluminum case to finish it with a professional appearance. This one fits cars with a 55 pin Bosch ECU. See the DIYBOB main page for an application list. Use it to adapt a MegaSquirt, MicroSquirt, or any other ECU of your choice to the OEM wiring. A close up of the connector is below.

This circuit board also has space to fit two of our DIYPNP’s BIP373 mod kits if you need small built in ignition modules inside the adapter board.

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What engine management systems can I use this with?

  • This breakout board is not specific to any particular engine management. You can use it with any ECU that is capable of running your engine and has the features you need.

How exactly do I connect my ECU to this one?

  • Start with a harness that has the ECU on one end and the other end unfinished. Run it in through the grommets on the back of the case, and then solder it to the main board.

Questions & Answers

  1. 0 votes

    Yes. You would solder this board to a wiring harness (like this one) instead of directly to the MegaSquirt board itself. The wiring harness can then be removed to test the ECU on a Stim.

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