i installed my 60's and ottp's pcm ( sent mine in and got it back) and everything was good... about a week later i installed the bkr7e's ( 1 step colder) plugs and now i have a cel.. would the plugs do that or was it just a quwincidence ( cant spell haha) that it came on right after i did that? i havtn had the code scanned yet im going to go hopefully today. but just wondering if the plugs itself could do that?