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I was under the impression that a tune for aftermarket headers was optional. When I put EL on my STI I didn't tune it until I went bigger turbo and the AFR was fine and no CEL.
You'll gain an extra 10% HP and TQ if you you get a tune with the headers from looking at the RR website.
Will the car throw a CEL if you have aftermarket headers without a tune?
As designo said it is a 50/50 chance
I know owners of GS-Fs that installed headers and did not get CELs and others that did. I just don’t want to do it and get a CEL. I believe it all depends on how the O2 censors are installed and where they are located, but I might be wrong.
I will try to do some homework on this and then decide what option to go with.
Love the mods, I literally just installed the R&R heat shield on my GSF an hour ago and the next thing I want to do is get the Joe Z exhaust. I fully agree with you that it sounds Awesome. And who can say anything bad about the TOMS carbon fiber kit, LOVE IT !!! Keep up the great work.
Last edited by 18ASGSF; 11-21-19 at 06:03 PM.
Reason: typo
11-21-19, 06:16 AM
