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Posted

I was riding today the shee ran good, yet i took off the airbox lid i was racing bansheeman1121 in the 3rd heat, i got her into 6th and it began to make a noise a loud wailing sound and seemed to lose power :confused: I let off the gas and hit it again made the noise. So i put the airbox lid back on and got her into sixth no problem no noise no power loss. nutz banghead

Posted

Probably just a lean bog and it echoed through the airbox since the lid was off. Taking the lid off will cause it to lean out some.

Posted

Yep. Sredish is right like always. I did the same thing last week just experimenting and man it ran like crap. Temperature and airflow make a hell of a difference on how a bike will run.

Posted

my airbox lid is at LEAST 3 jet sizes difference on my box. I usually run 310's and I had 290's in it the one time. Knew it was running lean so I tried throwing my airbox lid on......the thing barely ran it was so fat. It was breaking up and smoking like.....well....a banshee

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