MS3 or MS4 or something else?
I have an 04 gto(M6, 3.91, headers, exhaust) and I am looking into the MS3 or MS4 but I wanted to see if anyone had any tuning or issues with driving it on the street after the swap? Anyone in austin,tx or close by with one in a car I could hear/ride in?
Thanks!
Wd
Thanks!!
Zach
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