Quote:
Originally Posted by JOHNSONROD
if you have mufflers, your almost certainly ok. if you have headers, no cats, and no mufflers, your almost certainly over and will need the baffles.
i have long tubes, no cats, factory resonators and race mufflers. im just under.
my car is loud, just not too loud lol.
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Also - Cats....LTs with Cats (even high flow) through NPP, will probably be ok.