Do exhaust cutouts on TTS require re-tune?
05-02-2014, 10:35 PM
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Do exhaust cutouts on TTS require re-tune?
I have a 06 Cayenne TTS and would like to do the fabspeed secondary cat by-pass system with dual 2.5 inch cutouts.
Will this cause too little of back-pressure? Will this require a re-tune?
Will this cause too little of back-pressure? Will this require a re-tune?
