OldDog
New member
Insert a flex tube of some sort in the space between the cat converter and the gas tank. Do not allow it to touch. Vent it to an exhaust fan out the back to create negative pressure. Air should enter around the handlebar vent on the ST. Problem solved. Would someone be willing to try this? Maybe you could use a 1 1/4" radiator hose as a test. Does anyone have a photo of this area?
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