Quote:
Originally Posted by ForceFed4g63
You have to datalog afr's for tuning. That's one of if not the most important parameter to datalog when tuning.
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I totally agree with you there. My point is only that email/mail order isn't tuning. It might get you good enough but I don't advise it for anything other than bolt on NA cars. You can't just say OK goal is 13.2 afr at wot and believe that is what the car wants with nothing to back it up.