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Discussion Starter #1
Need some help
2009 yfz450r will idle but with any amount of gas it stalls out. Idles fine
Please help 
Has stock intake, full yoshi exhaust and everything else stock
 

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Registered
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1,549 Posts
Need some help
2009 yfz450r will idle but with any amount of gas it stalls out. Idles fine
Please help 
Has stock intake, full yoshi exhaust and everything else stock
How long u had it? Has a stock ECU?

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Discussion Starter #3
I had it for couple months I bought it broken replaced cylinder and piston. I know it worked perfectly before. Yes it’s stock ecu
 
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