no bottom end power

[honda729]

when I ride my quad dosent want to start easy then untill about half throttle it kinda spudders and acts like its going to stall but never does. then after half it jumps up and runs great. its a 416 with 12.5:1 compression and a stage 2 cam. is my pilot jet too big? should i go up to a hotter plug? or my exhaust is basically straight(i hate it) but is it causing it since there is next to no back pressure?
thanks for the help

[NickG5755]

your exhaust def has to be a major factor..

if you roll on it reallyyyy slow is if fine?

my craptor 660's exhasut fell off one time on the way to football practice (damn thing sounded liek a harly!) and if i mashed on the gas it would fall flat on its face then the top end wouldnt be to bad

[honda729]

yea it wont go at all untill it gets to the top end and then it runs awsome

[atvmaster0927]

if you have a 12.5:1 comprresion, you should be running race gas. Are you running race gas? that could be the problem.

[drew416ex]

yeah, you need race gas. what jets are in it. I had a similar setup and may beable to help.

[honda729]

yea im runnin 114 octane with a 160 main and a 42 pilot, uni filter, open airbox, slip on cobra