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Discussion Starter #1
Will a downpipe with a high flow cat approximately equal the perf. gain of an "offroad" downpipe.

I don't have emissions testing to deal with but just wonder whether to buy the straight pipe or splurge and buy the high flow cat version.
 
J

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Discussion Starter #2
get a Straight 4" downpipe(NO CAT), i have one on my car;)
 
R

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Discussion Starter #3
If you don't have emissions testing to deal with go NO CAT. It will be cheaper and faster.
 

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Just remember that with no cat you get tons of exhaust fumes. That's the reason why I decided to go cat. That shit gives me head aches.

Jay :cool:
 

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I used the RT Hi-flo cat down-pipe and was still faster than one with a RMM off-road. Only difference in mods was mine had a FMIC and his was stock.
The hi-flo was way better than gutted stock cats.
Plus I'm a tree-hugger so I'm kinda partial to the clean running cars...
 
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