Header install w/o defoulers. Should I be worried about ECU
 

Hey everyone. First time posting on the forum, couldn’t find anything on this so here I am. I’m installing PPE long tube headers in the coming days and I got them with out defoulers. Without them I’m obviously going to have a CEL and now I’m curious if the ECU will try to compensate and possibly decrease performance.

Do you have any other performance mods done (intake, exhaust, etc)?

Yes. Stillen gen3’s, tomei y pipe, tomei signal exit catback