I use the wetjet manifold on all my 61x motors. Its nothing magic, but it has reed stuffers builit in and has better runner flow than the stock manifold. I have not tried taking the 4mm off of a stock manifold, but I know Group K does that mod and says it helps.
I have tried taking 3mm off...
Yup....got out of work early so I got to hit the zone. Glad I hit it friday, cause I got screwed on riding yesterday!
Tem, Chris, and Carter were rippin' it up friday!
I'm running an old school PJS in-hull resonator. It basically replaced the stainless stock rear exhaust tube and acts as the muffler. It has a unique sound but isn't obnoxious.
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