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Originally Posted by Neejay
Do you think that the 3" yields more gains than 2.5"? (I know they both have gains, just curious. I have a 2.5" right now)
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Slipnfall of NICO just dynoed his 2.5" BRM exhaust. Peak HP was 7.2 gained, and torque was I believe 6.8FT/LB.s gained if I remember correctly.
http://forums.nicoclub.com/zerothread?id=147604
His exhaust uses a resonator which cut's back on exhaust flow and increases back pressure. I've also seen dyno's with 2.5" making almost 8HP without a resonator, and a canister type instead of muffler type.
Dyno dipping on the KA is typical at 4000RPM....