Went to go upgrade my exhaust today, sadly didn't happen guy made me second guess myself. What can you all tell me about the resonator? Do I need it? Will it drop back pressure? Will it help in being able to hear my exhaust? Will I throw a check engine light?
Well I've finally decided to pull the plug and slowly start working on my 2016 GMC Sierra. Plans as of now is to drop it on 24's change out the grill, a little color matching, and possibly change out the lower valence. I just want a nice look nothing big. Has anybody had any luck going 4/6...
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