jetting,valves

[kfxmonster]

can anyone tell me if u can jet a kfx and how much to jet it and how to shim the valves, would this give me more speed/power

[nkeen07]

QUOTE (kfxmonster @ Jun 22 2009, 09:09 AM)

can anyone tell me if u can jet a kfx and how much to jet it and how to shim the valves, would this give me more speed/power

The KFX450 is fuel injected...therefore no jetting changes are made. All the tuning to the fuel delivery is done by using a fuel tuner/programmer like the DynoJet PCIII or PCV. When tuned correctly, these can make a considerable difference, especially when coupled w/the other two of the big three (Pipe/Intake/Tuner). The intake and tuner are the most important as the stock intake is very restrictive (go w/FCI intake as it's the best).

As for as shimming the valves...I'm doubting it going to make a difference.

And for speed or more acceleration, change your gearing through sprocket sizes accordingly.

[offroadhunter]

QUOTE (nkeen07 @ Jun 22 2009, 01:18 PM)

The KFX450 is fuel injected...therefore no jetting changes are made. All the tuning to the fuel delivery is done by using a fuel tuner/programmer like the DynoJet PCIII or PCV. When tuned correctly, these can make a considerable difference, especially when coupled w/the other two of the big three (Pipe/Intake/Tuner). The intake and tuner are the most important as the stock intake is very restrictive (go w/FCI intake as it's the best).

As for as shimming the valves...I'm doubting it going to make a difference.

And for speed or more acceleration, change your gearing through sprocket sizes accordingly.

If you did adjust your valves you would need to have a FI programmer so that you could adjust your air/fuel ratio.