March 2, 201214 yr #1 hello am running 380rwkws with a 3inch exhaust and standard dump how much difference will a upgraded dump pipe make.
March 2, 201214 yr #2 gee 380kw on a 3 inch exhaust fark!that system is holding you back mate.go 4 inch dump highflow cat if not already and at least 3.5 inch cat back
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