what else could i do to my 2001 400ex to get more power out of it it already has hmf pipe, jet, k&n air fiter(lid off)... what else what would a rev box do

 

revboxes dont really give you anymore power they just let you use more of the power you already have.

www.amrracing.com has a nice one

 

what is a cdi box?

 

it works with the timing and rev limits........ive got one.......its ok...... i like the amr boxes

custis sparks makes a good one to

 

o ok i think i might get one...

 

do you have any problem with fouled plugs

 

hey if you get and amr revbox dont waste you money on stage 3 ........stage 2 is just as good and get a coil i havent change my plug in over a year since getting the coil.

 

no i had a crappy one in it once i got the 400 like in febuary the guy gave me a new plug with the quad and so i just put it in there and that was back in febuary...
but my friend had a 2003 with just the yoshi pipe and he got going down the road on it and the plug just shot out of the head and died... had to tow it to the garage with a ltr lol...

 

ok i think i will... so what do u have on ur quad?

 

i have a full yoshi k&n jet kit tcs front shocks

i dont really ride it much anymore

since i got my 4x4 rancher........its fuel injected