I just got my hmf today..wow!!! i love it soo much. i have the air box lid off and it starts and runs great. other then the popping when slowing down? what should i do about that. and on the hmf website it says to use
#125 main,#40 pilot and the Fuel screw out 2.5 times... i was trying to get advise before i go and buy the neddles.. suggestions please.. oh and theres some exhuast leaking where it clamps what should i do about that?
thanks guys

 

the jetting sounds right,. as far as the leaking goeswhere is it leaking from? the header or the mid pipe?

 

Get the 300R needle (pre 06 & 49 state version), start at second notch from top.

 

Im not totally sure but i think its coming from where it connects. there isnt like any ruber bushing it just slid right in to the head pipe.

 

Thats the same jetting i have and the mechanic said mine was running way rich...... ill try to take the airbox lid off..... i think im gonna turn the air screw to 2 turns..... the HMF is a BIG pipe..

 

I think with your set up that pilot jet is way too big, especially at 2.5 turns out. I am running the DJ jet kit, stock pilot, 2.5 turns out, no airbox lid and a full Big Gun exhuast. Checked the plug Sunday and it was perfectly light brown. I still get a little pop when letting off from WOT at red line, but it is nothing I am concerned about at all.

 

You just need the N1TC needle with the clip on the 2cnd notch and drill the slide. Also, remember....a turn on the fuel screw is a full 360deg not 180deg (looking at the slot) so make sure it actually is 2.5 turns.

To fix the exhaust leak, remove the HMF and put some hi-temp gasket sealer (black) on it and slide it back together...common problem with some.

 

i hear all these poeple talking about drilling the side ..but what the heck does it mean? and how do i do it? is it worth it?