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jetting wr450f and powerbomb

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I am sorry because my english is very bad.

I have a wr450f 2005 with FMF factory 4.1 system with powerbomb and I have not snorkel in air box.

Can you help me with jetting information. Height about 2500 feet.

thank you very much.

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I have the same set up except 2007 wr 450. poping on decell I jetted it according to the jetting kit that came from fmf. My bike is not running rich I burn a 91/100 octain mix could that be the problem should I just stick with 91 octain. my wife has the 250 wr with the same set up and I rejetted that and it does not pop whats up. sorry to hijack the thread but just like Tacoma we need help. sorry Tocoma maybe this will work...

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