I just swaped in my built b16 into my 89si, everythings working good.. since im using a obd1 throttle body on my aebs im not sure which map sensor to use, the one on the firewall or the tb, i cut and extended the wires to test them both, either or when used the car will idle at 2k, but as i was streching the green/white wire came undone and lowered the idle to a nice 800rpm but the engine light will come on showing map sensor, but if i hook it back up it spikes back up to 2k? could both my map sensors be shot, whats causing this to happen... thanks