How Much More Power Will A 3-Inch Exhaust Give Compared To 2.5-Inch?

We all know a wider, less restrictive exhaust should give more power, but how much difference does the jump from 2.5 to three inches give? The Engine Masters guys from Motor Trend performed some tests to find out
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fabioloera

So, it makes any difference on a J30A (Honda) should I fit a 3 or 2.5?

09/13/2016 - 04:20 |
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