Ive had a hondata tuner for almost a year. ive tuned my car to each upgrade Ive gotten.+ 6 psi, ISR ,spec v tuning cat back exhaust , and I just got a PRL catted down pipe but it gave me a exhaust system check engine light. does this mean I need a professional tune ? or did I do something wrong ? incorrectly ?
thanks
2016 civic touring US
Re: 2016 civic touring US
What is the exact error code?