cheap performance upgrades

[rickmanrider]

what are some up grade to get power for my 400ex i have exhuast, jeted, sperckes/chane k&n intake. what are there thing I can do to make more power for cheep.

[Old Head]

Next would be a cam and high compression piston. both run around 130.00 to buy. Rev boxes are pretty cheap too anywhere from 39 to 89 dollars.

[pit/wood]

rev box

[400exrules]

sparks timing advance key, $20

[400exstud]

$20 for a +6 timing key. A free one is running without an airbox lid although that isn't for everyone.

[breazin man]

hot cam

[hrc]

I have been thinking about getting a hot cams and high compression piston how much worse would the gas millage be and what kind of power increase would I get?

[xcracer416]

cheapest mod is free.........listen up it works..........adjust your thumb throttle on the handle bars. cause from the factory they dont take all the slack out and you will only pull the cable 85% of the way until you adjust it. adjust it out un til you dont feel any slack in the throttle and crank it turn the handle bars both directions all the way to see if it revs. if it does the adjust it back in alittle, and repeat if needed.