Zip Ty Carb Mod on 07-11 WR 450F?
Posted April 13, 2011 - 06:22 AM
my bike has a bog i cant get out of it....was thinking it could be from the restrictive 09 muffler, so i bought a 07 muffler and it will be soon here...
my bikes mods
- dual sport kit
- 14-45 gearing
- free mods - prefilters added to airbox for more air
- twin air filter with backfirescreen removed in cage
- GYTR jetting and desmog kit
- 09 yz 450f exhaust complete
am soon sending my forks and shock to factory connection for a revale,so would like to do this all at once...to save downtime...
any help or feedback would be great!
Posted April 13, 2011 - 07:33 AM
Your bog is due to the AP in need of tweaking. Read the sticky.
What do you call 'prefilters'? I hope you do not mean those 1" dia. inserts as they do nothing.
Backfire screen does not need to be removed on a Yamaha, nothing to gain.
Posted April 13, 2011 - 11:33 PM
am not sure, did the gytr kit in 08!
and no o ring mod or pump adjustments yet
I would be surprised if a smaller leak jet and doing the 'O' ring or lock wire mod, even better a stronger AP spring (merge racing), did not cure your problem. Have a read at this.....http://www.thumperta...ad.php?t=920989
Posted April 14, 2011 - 07:07 AM
On my WR471 I use the FMF Q4 exhaust w/megabomb header and jetting very close to a stock 2006 YZ450F and it runs BITCHEN!
The JD kit is a good option since it saves you the trouble of having to comb through the Yamie parts book looking for needle numbers.