stage 1 or 2

[madkaw06]

I have a KFX400 with a White Bros. Slip-on. K&N and a Hotcam on the intake. What in the world should i use on the jetting. I am in Ohio below 3000 ft. And ride all year round. I have a Dynojet kit with stage one and two instructions and not a clue where to start. Do i need to jet at all. Or am i wasting the hop-ups if i dont. I have a little backfire when letting off the throttle. But what is really ticking me off is my buddy has a bone stock LTZ400 and mine is no faster with the extra mods, i do wheigh 50 lbs more than him though and i know it might make a difference..
HELP ME PLEASE i should be smoking him.

[z rider2]

hey man, it definately sounds like u are lean. with your mods, and proper jetting u should be able to take that stock Z pretty easily.

[quad97]

Stage 2

[drzoo2]

airbox lid on or off?

If it's off you should be around a 150-160 main.

z