Advice on power,help!!

[aquira]

yes im already using the smallest front sprocket and the biggest rear sproket

but thats not it..

i think its more on the exhaust
when i switch it with a road race one...man it runs like hell...i still can feel the boost..it was owesome..with the same sprocket..

but cannot use road race exhaust on trials

and unfortunately the frame didnt left enough room to make mx type of exhaust

thats why i decided to build a custom frame for it..