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Discussion Starter #1 (Edited)
Hi, I'm looking at purchasing Maganflow cat back, I'm not sure if I'm reusing the mechanical valves that come from the factory. Who here kept them? I'm going with a true 3' exhaust , Headers are in the very near future. Also I see there are posts about the factory cats actually flowing better than aftermarket hi-flow cats, any truth to this? Documented? real proof? Will aftermarket headers bolt to the stock mid pipe in order to retain the stock cats?
Please share your experience. Thanx in advance!
 

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sub'd. I want to know all of this.
 
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