what should my first couple of mods be for my 02 400ex.... it's completly stock and i'm looking for some more power in the low/mid range and if i can .... at the same time gain some top end speed....
let me know of the mods. i should persue in buying.

 

k&n filter, hmf pipe, and jets are the only thing i've done to mine and it's so much more powerful in the bottom-mid range.

 

Without wanting to go big bore. . you could always have the head ported and polished. . that will make a huge difference and depending on who you know. . shouldnt' cost that much. . especially if you know how to at least take the head off and put back on yourself once the port work is done. other than that. . yeah. . pipes and jet kit. good luck

 

i know some one who could take it to work and polish and port it on a $300,000.00 machine cuz he works in the aerospace industries field....

 

With out port and polish experience you could ruin the head and you dont want to do that.. It pays to have someone how has done alot of porting work to do it for you.. You wont be dissapointed..

 

the "person" is my dad he has been machining for 16 years, he works under 50 MILLIONTHS of an inch tolerances for military planes... i think it'll be ok