Retune and catless downpipe?
Retune and catless downpipe?
Im currently trifecta tuned have been for a while now. I just got a new zzp 2.5 catless downpipe. my car is currently tuned for a zzp 2.5 catd downpipe. what is it doing to my car and should I get retuned for catless?
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z28addiction
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Sep 28, 2015 12:03 AM



