Jetting Question?

[alex_hockey]

Hey guys, i have looked at quite a few posts and still cannot find a specific answer to my jetting. I no its been gone over many times but i still cannot get it and my low end feels like its suffering. Currently i have a 99 sj with dual 44 mikuni's also proformance wise i have a r @ d head, msd enchancer msd ignition and am running the stock exhaust. The closest information i got was

Brand = yamaha
Model = superjet
Size = 44
Quantity = dual
Main Jet = 105
Pilot Jet = 120
Needle/Seat = dont be lazy do the popoff correctly
Spring = 15-17 psi
Pilot screw = 1 turn
Main Screw = 1 turn


Any ideas where i should go from there? Or anybody have a general idea that i can use as a starting point.?

 

[alex_hockey]

Also the guy before me had a b pipe on the machine and sold it to me with the stock exhaust. Thats why i was just wondering about the jetting, im pretty sure it will need to be changed