Posted August 29, 2002 - 07:40 AM
Anyway, question is: What are the wires you guys are disconnecting? I assume that one is a rev-limiter, what is the other? I uncorked the bike, the airbox, exhaust and throttle stop, and am happy with the R's I get now, but it does seem to hit some sort of limiter at high RPM. Is it really safe to rev much higher?
Any help is greatly appreciated. I already love the site/forum and hope I have some usefull input for you guys as well!
Oh, and by the way, I do recall reading on Yamaha web site that the WR450 is about 6 lbs lighter that the '02. The link was removed a while back.
Posted August 29, 2002 - 08:15 AM
I have done this, and I found that my bike lost the stumble that I would get when I was bombing down the highway, seemed like the bike rolled on the power smoother, and it did not detriment the economy.
As for the wire, take off your tank, and look for a 2-wire black connector that has a black/w white wire and a grey wire. Disconnect that black connector, and pull the grey wire out from the back of the connector (I then pushed the grey wire up into the insulation) then reconnect the black connector.
That is all that is required.
Some cut the wire, but if you get the wrong one, well, then you get to work on your wire reconnection skills.
Posted August 29, 2002 - 08:59 AM
Posted August 29, 2002 - 10:11 AM
Posted August 29, 2002 - 11:08 AM
Posted August 29, 2002 - 11:49 AM
From what I’ve read, it helps the 250’s more than the 4xx’s. On my 02 I noticed a little better engine mid throttle control and that was all. Depending on how you’ve modified your bike you may feel more of a performance gain IMO.
It’s a very simple mod and won’t harm the engine in any way. Go for it!
Posted August 29, 2002 - 12:03 PM
Highsider1, try the YZ timing and EMM needle… You’ll love it!
Posted September 03, 2002 - 12:35 PM
Posted September 03, 2002 - 01:03 PM
Do this mod if you are fouling plugs.
(((Thanks Motoman393 for the tech pics!)))