2009 yz450f exhaust conversion to 2006 stock exhaust proper jetting?

I have a 2009 yz450f and have a 2006 complete stock exhaust for it and was wondering what the proper jetting would be for this conversion?

You should be good to go, you could always call JDJetting and get one of their kits. It helped my bike a lot.

Alright I will look into that thanks

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