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upgrading test pipe

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Old 09-24-2008, 11:19 AM
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Default upgrading test pipe
Just wondering if its worth it? I have the berk TP right now. My exhaust is the skunk 2, Which is 70mm splitting into 2 60mm pipes. I was also going to get the rear section redone with 1 70mm pipe. Any gains or just not worth it to upgrade the TP?
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Old 09-24-2008, 11:33 AM
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i think its worth it... but i dont think gain will be minimal
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Old 09-24-2008, 01:53 PM
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It is always best to have your test pipe match your catback size... less turbulence.
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Old 09-24-2008, 01:55 PM
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yeah dont bottle neck your exhaust.
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Old 09-24-2008, 05:32 PM
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Originally Posted by DevilsSi1481,Sep 24 2008, 01:55 PM
yeah dont bottle neck your exhaust.
It's not a bottle neck if the exhaust manifold outlet is smaller than 63.5mm, which it is.
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Old 09-24-2008, 07:10 PM
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Originally Posted by D Loke,Sep 24 2008, 01:53 PM
It is always best to have your test pipe match your catback size... less turbulence.
Turbulence? What?

Wouldn't this only be an issue if he went from a large test pipe to a smaller catback?
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Old 09-24-2008, 07:12 PM
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I suppose so, but regardless it's a bottleneck right now, and messes up flow... so I guess you could call it turbulence.
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Old 09-25-2008, 07:10 AM
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matching sizes is best. you will make the most power that way.

-Ian
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Old 09-25-2008, 02:31 PM
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what size piping is on a hks?
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Old 09-25-2008, 09:51 PM
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Originally Posted by slates74,Sep 25 2008, 02:31 PM
what size piping is on a hks?
60mm
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