Cool Mr Steve
15+ Year Contributor
- 553
- 11
- Jul 18, 2004
-
Spanaway,
Washington
Ok, with a ported manifold, ported Big 16g, ported o2 housing, and a 2.5" catback exhaust... How much is not having an aftermarket downpipe hurting my performance?
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dave99gst said:not very much. got a stock cat ? id' adress that fist if ya do.