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      03-06-2019, 09:49 AM   #12
CandyRedRC46
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Drives: 2013 328i
Join Date: Feb 2018
Location: Florida

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I really wish I had the time/money/energy to do back to back dyno runs for no other purpose than to settle friendly debates on the internet, but my opinion is there is no way that a true full 3" exhaust on a car making +250whp will not out perform the same exhaust on the same car with a 2.25" section placed in somewhere.

Now whether this is the difference of 5 or 25 whp, I don't know, but on a car that we are all shooting for 300whp in, 2.25" is not adequate.