I got an E-series WB exhaust... Now what? jetting? WR400
Posted November 02, 2004 - 10:23 PM
Posted January 17, 2005 - 07:42 AM
Posted January 17, 2005 - 09:42 AM
Posted January 17, 2005 - 10:30 AM
You can run only a few plates which gives similiar backpressure to stock, so you may not need to rejet, but why buy the pipe if you don't want better flow? Unless you like the sound or you broke the original and this was simply a replacement and not strictly intended for better performance?
The pipe comes with lots of plates,maybe 12ish, or you can just take the plate out of the end and run it full open. Generally you adjust the number of plates to tune to your bike and rejet to suit. I did rejet mine.
When I first installed it the temp was very cold and I didn't have a big enough main jet so I ran it baffled close to stock. Now I have it jetted and run it with more plates, like this. I just installed a 430 kit and Hotcams on the weekend so everythings going to change again and I should be running the pipe closer to full open. I realize this isn't a lot of help to you regarding specific jetting but you probably will have to play with it a bit.
Posted July 14, 2005 - 03:30 PM
A good friend that I ride with has that exhaust on his wr426. We made him take off that end plate and he said it made so much difference in a good way.
It made it real loud too! How it should be!
My mate and I ordered a Procircuit Ti GP system each yesterday off ballards!!!!!! I can't wait till it gets here.
Posted July 14, 2005 - 03:36 PM
Im wrapped with mine, cant wait to see how she performs and sounds. Might have to play around with it a bit though-in the instructions for the pipe WB say that in some cases running it totally open can actually reduce power, so I thought I would get the good oil from you guys!!! I cant understand how running it fully open could reduce power...but then again Im not an engineer
Posted July 14, 2005 - 05:52 PM
If I ever want to go fast, I'll have to try to remove that USFS plate and make some noise.
You may want to go up one size on the pilot jet...