To Mod or not to Mod...?

6 replies to this topic
  • nevadaoutlaw

Posted July 15, 2005 - 10:06 AM


Any suggestions on what mod. I should do next? Just looking for a little more horses, because I use the bike for Supermoto. In the dirt it was fine stock.

05 WR450F current mods:
YZ Throttle screw
Gray wire mod.
AIS removal
Zip-ty fuel screw
Yosh full exhaust /w header
Airbox opened up
Twin Air air filter
Jetting: 165 Main (#4 on clip), 48 Pilot (it maybe a little lean...I think)

  • jchantzWR400F

Posted July 15, 2005 - 10:59 AM


You could always try the yz450 exhaust cam. May make better power in the higher rpm's.


Posted July 15, 2005 - 01:04 PM


I'd say you're pretty much golden with what you've done. Not sure what else you can do. What is your gearing for

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  • nevadaoutlaw

Posted July 16, 2005 - 02:18 PM


Right now I am running the 14 in front and a 47 in the rear. I don't need a to go smaller in the rear that is for sure. Do you think a 48 or higher may make a difference?

Ya, I guess not much more I can do unless I starting putting cams in and that may not make much of a difference and I am not sure if I need to go there right now. I do need to open the airbox a bit more. I have the side cut outs cut out and the snorkle out, but I ran it without the side cover and it was very noticeable the increase in most all ranges.

  • rushfan

Posted July 16, 2005 - 02:45 PM


I'd say you're set. Leave the cams alone and ride! :applause:

How do you like that Yoshi exhaust?

  • nevadaoutlaw

Posted July 17, 2005 - 08:45 PM


Like the Yosh exhaust thus far. Much lighter, much more power, easy to change to the strick 96 dec. w/ spark arrestor.

  • rtrolli69

Posted July 25, 2005 - 07:39 PM


You might try the Pwr now plus sytem.Ive got it & love it..With this mod and JD jetting it was like adding the pwr again that you gained with your pipe!!more bottom&the midrange hits hard and pulls longer..a little $$$ but we all know thats what makes pwr..Russ


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