very disapointed....

[Cwad_BoyEX]

I was not proud of my 400ex After i came back from the dunes with a couple of friends, i raced one friend of mine he has a 2003 totaly bone stock 400ex and i have a 2002 400ex with DMC alien full and stage 1 hot cam, k&n filter and 14 tooth front sprocket, we race because i wanted to see how much my mods help me and yes its jetted properly and we raced he beats my by 4 bikes LENGHTS i was like what the hell we raced again same out come, switched bikes same out come and his bike feels slower so i dont know what, what do you guys think?

[Rico]

loose the 14 tooth sprocket and make sure your throttle is adjusted properly at the throttle housing. They come from the factory with lots of play and you could loose up to 15% of yoru power.

[JRP]

get rid of the 14 tooth sproket.

[2001300exguy]

race a rider whose worse than you

[450r51]

buy a 450r and u wont loose.

[2muchquad]

hows your jetting ?too rich?condition of your piston/rings?valves sealing well?a good running stock quad will outrun a poor state of tune quad with aftermarket goodies thrown on.especially if the components dont compliment each other

[Punk'd]

Check you plug to see if jettings dead on. Brown is what you need to look for. Or do what Rico said check your throttle cable.

[YFZ450Ridr]

might sound dumb, but see if the choke is on.

[2muchquad]

"might sound dumb,but see if the choke is on"

LMAO...

[JDiablo]

Originally posted by 250EXridr
might sound dumb, but see if the choke is on.

i've done that a couple of times on the old 300