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      03-12-2013, 01:19 PM   #1
s1k0ne
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Best DownPipe?

Looking to order one soon and i was wondering of each brand's hp/tq average gains. They all seem to be around the $500 mark. Your input is appreciated.


Thanks!
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      03-12-2013, 01:19 PM   #2
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btw, the car is a 335i Manual
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      03-12-2013, 02:30 PM   #3
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Looking to order one soon and i was wondering of each brand's hp/tq average gains. They all seem to be around the $500 mark. Your input is appreciated.


Thanks!
I think they're pretty close in performance, it's just a pipe with less restriction (no cat or higher flow cat) than factory.

I think Challenge is the only one I've seen to offer a high flow cat as opposed at the other options with no cat at all.
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      03-20-2013, 02:59 PM   #4
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I'm running an Evolution Racewerks down pipe cat free with a custom exhaust and it awesome. Great performance. It's throws a cell when in map 0. But I'm usually in map 1 anyways.

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      03-20-2013, 03:33 PM   #5
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you have a jb4 stage 2 correct?

On jb1 stage 1, will it throw a CEL?
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      03-20-2013, 05:52 PM   #6
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you have a jb4 stage 2 correct?

On jb1 stage 1, will it throw a CEL?
If you go catless it will definitely throw a code after a tank or so... Just go Stage 2!
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      03-20-2013, 11:13 PM   #7
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Definitely stage 2.
Free flow custom exhaust
Meth kit on its way in this week
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      03-20-2013, 11:22 PM   #8
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http://s192.photobucket.com/user/GET...c587e.mp4.html

Shut it down top of 4th
Map 1 91 octane street tires spinning real bad
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