This has happened about 4 times since my headers install. My SES is constantly showing. But once in a while it will flash (misfire?) for about ten seconds and act like it's missing, then it goes back to normal. and be fine the rest of the day. I have new talylor wires with taylor fire sleeves where the wires would hit the headers. any insight on this before I take it to a shop to diagnose would be greatly appreciated