Put in my headers a few months ago and my car ran fine. I hit a 16.2 at the track with them. Recently my car has been throwing a code but it is only happening every once in a while. It hasn't been running to well while the engine is cold. I have notice it is getting worse then I start the car. I put it away for the winter because I don't have the time to deal with it. I don't have a odo scanner and every time I am at the local store the no codes are being thrown so I can't pinpoint the problem. The car just hit 60,000 miles and ever since then it hasn't been running well. Anybody have any suggestions??

 

It should still give the code at the store, if you search there is a way to connect a paper clip to scan the codes. Get the codes and anyone on here could tell you what the code is, including myself, I got the book around somewhere.