I'm using the Sean Hyland Motor Sport header straight back system inluding 3" cat back.Average gains on his and our Dyno's 60-70 rrwhp.The ssysstem is perfectly tuned by Sean and his engineering staff and no other ssysytem will put out these #'s by 20 rrwhp.David Smilovic.
PS. 3" straight back from header,no welding and perfect slip fit.Dave.
PS. 3" straight back from header,no welding and perfect slip fit.Dave.