I installed the x-pipe last night but when I went to start it she was running really rough. So rough that it died a couple times. I thought maybe I installed cams instead of an x-pipe, that's how bad it was. The idle was way off, high then low and back and forth. I took her around the block and it was spitting and sputtering. Could it be possible that i put the o2 sensors back wrong and maybe they got switched up? Any ideas would be great.

 

Any vacum leaks? Maybe you don't have enough backpressure to keep it running correctly? I don't think you can install o2 sensors wrong. You do have two of them on the headers correct?

 

you can't hook up o2's up wrong.

 

did you throw a code?

 

did u reset the ECU? if not try that. you probably have a leak too

 

reset the ECU by disconnecting the negative battery cable for at least 10 minutes to clear the KAM (keep alive memory) so the ECU can learn the new signal readings it is getting from the O2 sensors and it will self correct for them. you need to do this anytime you change anything so the ECU starts over fresh and learns how to react to the new parts.

 

Definetly do what roundy said. My car was a little wierd when i first installed it. I disconnected the battery for about 15 mins and then started her up and let it idle for about 5-10 mins, then i drove it around a little. Works great now......