Map for Yoshimura pipe?

Hey guys, I just got a Yoshimura RS4 full system for my 2011 Yz 450. Any recommendations for a map setting that will work the best for mx with this pipe?

gytr powertuner put 4 in all fields its universal

Hey guys, I just got a Yoshimura RS4 full system for my 2011 Yz 450. Any recommendations for a map setting that will work the best for mx with this pipe?

i have same rs4 and found the standard setting worked best they run rich standard so with the pipe it will run perfect i tried all that mapping stuff and found the standard was the best if you want to do it properly you need to get a powercommander and hit the dyno.just changing mapping with the power tuner is just like changing jetting the old way.

Marmont map works really well with that pipe if you're looking for an outdoor setup with more mid-top. I tried a few and that one was the best unless your riding really tight stuff .

Edited by rickallen124

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