I did a b16a swap into my 90 crx dx and it is running unbelievably rich (like a coating of black stuff on the back of my car) when I first take off the car is real sluggish until above 4000 rpm then its fine after that. I'm running a chipped PR3 ecu and I have a virgin PW0 ecu. The only code I'm getting are for knock sensor. They both do the same thing. I have changed the O2 sensors and the injectors however it is the same problem. It almost seems like the ecu is giving a constant pulse to the injectors putting to much gas. It hits Vtec fine and other than the rich problem its great. I was thinking maybe it is the TPS sensor because when the car was idleing I unplugged it and there was no change in the cars idle or anything, so I switched the 2 outside wires on the tps plug and no change then either. I need to figure out whats wrong b4 gas goes above $5 a gallon because its killing me right now I only think I'm getting like 10 mpg. Can somebody help me without telling me to go buy an Vacf or hondata or anything like that I just need to know WTF is wrong.