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Old 09-22-2010, 06:59 AM
scale only 4 me
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Join Date: Jan 2002
Location: Avon Lake, OH
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Default RE: back pressure question

ORIGINAL: dahigh

My muffler on myOS 90 4 stroke doesn't have a back pressure connection. Where do I put the back pressure tube from the gas tank?
If it's the pre "surpass" 90 then just vent the tube out side the plane somewhere indiscreet, like the bottom of the cowl, just like if it was a gas plane