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70MM VS 3 Inch

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Old Jan 30, 2007 | 04:19 PM
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Default 70MM VS 3 Inch
I am having my exhaust made in a few weeks. I would like to know what is better for NA. I have seen great gains with 70MM but I have also seen people talking about 3inch is better. Thanks a lot-John
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Old Jan 30, 2007 | 04:34 PM
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3inch is only better if you have some kind of Forced Induction, otherwise you'll loose low end torque due to not enough exhaust velocity.

Get 70mm if you sticking to NA.
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Old Jan 30, 2007 | 05:00 PM
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^^
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Old Jan 30, 2007 | 05:48 PM
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specs said it best
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Old Jan 31, 2007 | 12:00 AM
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But 3" exhaust does sound VERY nice on N/A, for me that was reason enough. It's loud as hell.
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Old Jan 31, 2007 | 06:14 AM
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^^^^
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Old Jan 31, 2007 | 08:15 AM
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FYI

76.2mm = 3.0"
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Old Feb 3, 2007 | 09:19 AM
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is 70mm the same as 2 3/4?
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Old Feb 3, 2007 | 04:10 PM
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^yes, 70mm is 2.76 inches.
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