The DIYBOB is a revolutionary 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 GM products with a 56 pin ECU, such as the 1227747, 1227746, or 1227165. We’ve seen it show up in a couple non-GM ECUs as well, such as the Rennix used in some Jeeps. 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.