I have a 93 hatch with a zc sohc vtec. It has a air fuel gauge(autometer} that has been showing when i get on it, rich and when the vtec kicks it poors smoke but i let off the gauge goes back down. The problem im having is nows it goes to about half way and just sits there when im going instead of back and forth and when i stop it goes down but then back up to half when idling. I got on it today and there was a lot more smoke then normal. I know the car has a 255 fuel pump and msd. Also has p28 ecu, dont know if its been chipped. Can anyone give me any ideas on how to make it stop smoking and get the air/fuel right.