99WR400f half throttle help


2 replies to this topic
  • jethro

Posted June 27, 2005 - 08:22 AM

#1

I purchased a 99 WRF 400 and It has T-4 Exhaust and header on it. My brother has a 99 YZF400 who has full throttle power and I want the same.Im wondering what all this would intell to do so? Do I have to change jetting air box etc? Oh also it has an K&N air filter also.Any intel would greatley be appreciated.

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  • Conan_'dale

Posted June 27, 2005 - 08:35 AM

#2

Change your throttle stopper on the carb to a YZ throttle stopper. Do a search for "free mods" on this site. :)

  • jethro

Posted June 30, 2005 - 11:27 AM

#3

Does anyone know the difference between the length of the wrf 400 throttle stop and the yzf400 throttle stop on 99 models




 
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