Thread: correct exhaust piping size for b18b
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Old Jun 26, 2004 | 05:57 AM
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Default Re: correct exhaust piping size for b18b
2.5 is too large at any point in the exhaist system for a naturally aspirated b18a/b, mandrel or crimp bent in my opinion. 2.25 will be fine. You won't be flowing enough air to make proper use of the larger size. You will only lose power.
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