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70mm exhaust and 63.5mm test pipe?

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Old 03-23-2010, 07:59 PM
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Default 70mm exhaust and 63.5mm test pipe?
I am about to get new exhaust and want to make sure that my Berk test pipe(63.5mm) will work with a dual 70mm system?

Thanks!
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Old 03-23-2010, 09:50 PM
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Yes the flanges are the same on both sizes.
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Old 03-24-2010, 05:10 AM
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Out of curiousity why would you want to bottleneck it at the cat?
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Old 03-24-2010, 05:22 AM
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Originally Posted by whiteflash,Mar 24 2010, 09:10 AM
Out of curiousity why would you want to bottleneck it at the cat?
The 63mm is a better uprade from the cat anyways.
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Old 03-24-2010, 10:57 AM
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it's not really a bottleneck if you have the stock header i think. i'm not sure what size the header is, but i think the stock exhaust and cat are 60mm, so i think it should be 60mm as well
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Old 03-24-2010, 11:11 AM
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I have that setup. I'm waiting until I upgrade my turbo kit to get a 70mm berk tp and sell my 63mm berk
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Old 03-24-2010, 11:55 AM
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I guess my question is... if you have a 70mm exhaust, why not having a matching cat/tp? If for no reason else, then to future proof... *shrug*
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Old 03-24-2010, 01:24 PM
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Originally Posted by whiteflash,Mar 24 2010, 11:55 AM
I guess my question is... if you have a 70mm exhaust, why not having a matching cat/tp? If for no reason else, then to future proof... *shrug*
one word...

$money$

I have all stock exhaust except the test pipe
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Old 03-24-2010, 02:20 PM
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ahhh my fault, I read it backwards apparently im dyslexic.

I thought u were asking if the tp would work with the 70mm exhaust u had *facepalm*
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Old 03-24-2010, 02:33 PM
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It will be fine. Alot of people run the OEM cat with 70mm exhaust's. The OEM cat is 60mm. the test pipe will free up some power, and plus the 63mm is bigger than the cat, so even better.
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