I just got my car back from the shop i had them install hooker long tube headers and a magnaflow cat backexhaust on my 97 z28 camaro they took the cats off and the o2 sensors in them my car lacks power, runs like ****, and smells alot richer could it be because of the o2 sensors are nt on ne more ? Also i have a jet performance chip stage 2 and a k&n intake on it

 

Well I suppose the shop you used didnt tune the car properly. Take it back and ask for a retune. For free

 

thanks for the help

 

Hopefully they did not away with the O2 sensors before the cat, otherwise tha car has no choice but to run crappy. The front O2s are needed by the PCM to compute the proper air/fuel mixture. The ones after the cat are only used to monitor the condition of the cats, and do not affect how the engine runs, but will light the check engine lamp if they are missing.

 

they did but the chip i have they said it makes it so the check engine light will nt come on thanks for the hep

 

Well, if they removed the front O2s, good luck trying to make the engine run properly.

 

can it permantly damage the engine ive put like 30 miles on it since then

 

Removing the O2s before the cat won't damage the engine but it will run poorly because the PCM won't be able to properly adjust the fuel/air mixture and will stay in open loop mode.

 

I'm a bit shocked that any legitimate shop would even remove them. It's a hefty federal fine if they or you get caught removing EPA equipment.

 

Yeah, the whole story sounds wierd. If they really removed to front O2s, they are a totally clueless bunch. lol