HHello, I've been rebuilding my Sierra race car and have got to the point where I will be starting the engine.. it came with a p8 ecu... I have opened it up and it seems it has a few points bridged on it.. I am not expert on this so need to know why this has been done.. I do know that the p8 runs of a Lambda sensor and my loom doesn't seem to have a lambda sensor.. could this be why it is bridged?? Also the baby board seems to be missing??? And it doesn't have the holes to mount it either??