Hey was up.. Okay my friend got a 90 CRX si... he has in it a SOHC ZC... it was running fine but was in a accident so was off the road for a few months... we just fixed the frame and it started right up with a jump no problems. We decided to try and put a b16a1 ecu on the car to see how it would run and it ran great. but then came the problems. it does a lot of crazy things like for instance it will run and idle normal but if you turn on the headlights the engine starts puttering... why? also if you are driving the hot cold meter is normal but when u hit the brake the needle goes all the way up to hot... while he is driving the rpm will start to jump around too.... whats wrong????? we put a reg si ecu on and it still has problems... help me please!!!!!!!!!!!!