New WR on the way...

This is my first time on this site, and I'm sure this question has been asked alot but here it is. What do I need to do exactly to my 01 WR 426 in order for it bark like my 98 Yz 400. I heard about the baffle, and throttle, but how do you do it. Also how would you convert the trip from KM to miles. Any other help would be great. I'm out of Great Falls MT so if anyone rides around here let me know. Thanks


Check out the archives and do a search on 'Timing or YZ timing'.

(throttle stop, air filter cover, [timing?]...)

You will find most of the modifications described there.

Start your jetting with basic recomendations and then start to 'finejet' the thing.


'99 WR400 F, YZ exhaust, throttle stop trimmed, WR timing, airbox cover removed

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