dies when i let off the gas

[gasit400]

anyone have any ideas on why when i let off the gas too quickly the quad dies? i have been messing with the jetting i have a 42 pilot 155 dynojet main, no choke k and n filter, holes in the air box lid, and w/b e series full exhaust.

i don't kno much about jettin but i think the dyo jets are wierd and i think u might have it too rich. have u tried a plug test that really the only way.

[gasit400]

yeah i did a plug test no matter where i have the fuel screw set and all the way down to a 138 main and the needle up one notch it is still black. i can not lean it out for some reason even with a 38 pilot. my wot is ok and my 1/2 throttle is pretty close but my idle is rich no matter what i do.:confused: