Ok i just put a nvidia test pipe and a Casper Electronics 02 Sim, on my 97 integra ls. Well everything has been checked and rechecked and when i start the car, my check engine lught comes on. The 02 sim has a red indicator, and it starts to blink when the car is on. Anyone have any idea why it may not be working? Help me please!!!!

 

you probably didnt cut the signal wire and hook up the o2sim signal wire. check out o2simuator.com