Kooks Headers Ecoboost DP
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Boosted Limited (07-25-2013)
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Some of the higher quality race cats flow almost as good as no cats (200 cells and such) and you are only going to give up 3-5hp. I know over on Audizine the B8 S4 without cats only make about 3whp more than ones with them and that's a factory cat. Thats why Geoff said his DP wouldn't be as cheap as other vendors bc full race uses $$$ cats on catted downpipes.