350X Jets

[toyvette81]

well my bike was running a little lean with the stock 138 MJ so i put in a 142 and still seemed to be a tad lean, so i bought a bunch of MJ'S to try out to find the perfect one.. so i skipped the 145 and went to the 148 today and it just dosn't feel as fast as with the 142, i do know that lean does in fact run faster.... but do you guys think this is in my head? b/c a part of me believes that if the bike does not lug, foul out, smoke etc... that i have not lost and speed on low nor top end and it is not too rich... i do know how to do correct plug "chops" and it shows a pretty lean plug,,, honestly i think the 150 or even 152 would be fine. but does any1 think i could even feel the difference in the 142 vs. the 148? ( obviousley i could feel the difference if the 148 lugs/floods the motor) but im talking about just feeling a difference in the two jets when it runs fine with both?

i have a gutted DG, uni, and my air box cover was off