Cant find a definate answer on this. Does a turbo back exhaust with sports cat on my 2010 S3 need mapped before it will run good, or is it just best to get it mapped to make most of gains and to put light out? Any input appreciated, thanks!
It would run fine I had my powervalve on for about a month before getting it mapped and never had a light come up. Ran as normal too. You may find certain exhausts throw up lights more than others though.
Thanks for that. I'm looking at getting sports cat first before cat back but wasnt wanting to rush into getting it mapped, as I will be changine more parts before the map
Thats good, just that I read on awesome gti website and it says it requires stage 2 map just wondered if I would maybe need that for MOT, to pass safely
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