The DIYBOB is an exclusive breakout board from DIYAutoTune.com that allows you to easily build professional adapter harnesses 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 for a professional appearance. This one fits cars with a 42 pin Nippon Denso 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.