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japelvis

do i need to rejet?

4 posts in this topic

I recently did the throttle stop mod and uncorked my exhaust on a 2007 wr450, do i need to rejet because i now have less backpressure?

As said above, you need to rejet because they are jetted way too lean to pass federal emission regulations.

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What is your elevation?

Did you open the airbox?

What do you mean by "uncorking" the exhaust? Did you just drill the "baffle within a baffle" or did you remove the whole stinger? Are the internal baffles in place or did you pull those too?

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