i put on my hmf and rath airbox filter, i put in a 170 main and 55 pilot. when i took it out to ride, 1st gear seemed fine, shifted into 2nd and punched it and the mfer bogged and just about died, had to use the clutch to get the revs up, top end seems fine too, cept now, it hits the rev limiter so im guesing thats what was going on up top. and when i stab the throtte just sitting there in nuetral, it doesnt have this instant response. Can anybody help me please!?

I have not touched the needle or the mixture screw yet.

 

sounds a little rich to me.. when i had my biggun uni vents and a k&n i was jetted at 162.5 with stock pilot... it ran fine.
170 seems like alot... i ran that with my clamp on... with a 50 PJ

 

well, it is the rath airbox kit ($90) so its an open airbox, but i did figure out whats wrong, i put the main jet in the started jet spot (DOH!!!) It idles fine now and the throttle response is MUCH better!

 

lol... that would be a problem...
i thot the rath kit only added a small opening to the back side of the box...? thats why i went with the vents instead of that kit.

 

this is the thing that gets rid of the whole airbox. It uses a 400ex filter.

 

ohhh... i see...

 

i think the stock jet is 165,, you should try one size down and see what happens--- sounds to be running rich

 

stock is 150

 

OHH ok i was not sure ---good to know thanx