Screamin440
10-07-2004, 11:12 PM
Okay guys, I've got somewhat of a stupid question but I'll give it a shot anyway.
I just picked up this 400EX yesterday at the dealer so there's no way for me to know what all is done to it. I know it has a big bore kit presumably it's a 440. It also has an FMF pipe with a White Bros muffler, a hot cam and a K&N.
I just replaced the plug on it and reading the plug that was in it, it's running pretty rich. Do you guys have any idea what jetting I need to start at? Obviously there's no way for you guys to know the exact jetting I need but do you know a ball park range I should be at? Also, when you jet down, do you guys go down one jet at a time or do you go down two sizes at a time?
I just picked up this 400EX yesterday at the dealer so there's no way for me to know what all is done to it. I know it has a big bore kit presumably it's a 440. It also has an FMF pipe with a White Bros muffler, a hot cam and a K&N.
I just replaced the plug on it and reading the plug that was in it, it's running pretty rich. Do you guys have any idea what jetting I need to start at? Obviously there's no way for you guys to know the exact jetting I need but do you know a ball park range I should be at? Also, when you jet down, do you guys go down one jet at a time or do you go down two sizes at a time?