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Old 08-08-2007, 02:11 PM
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pilotpete2
 
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Default RE: New Great Planes Revolver

The common problem with after market Pitts mufflers is that they they tend not to provide adequate pressure to the fuel tank, the problem will show up when you tune the engine and point the nose up and the engine goes lean and dies, this even with the HS needle set well on the rich side. With the Slimline I have plugged one outlet completely, it was not enough, I now have the remaining outlet restricted to the same ID as the stock muffler outlet, hopefully that will be the magic, plan on testing tomorrow.
BTW, the Slimline I have is on a ST G90.
Pete