When I bought my supertrapp ids2 and uni filter, I didn't rejet. While riding in the snow last week(6-8&quot, my quad kept cutting out at 3/4 throttle. Could this be the main jet that I need to go up in size on? I am at 700ft and do mainly trail riding. Anyone know what could be the problem and the solution to it?

 

my wolverine would sometimes run bad in the snow because it was sucking in snow between the tank and the seat, and getting the air filter wet.what does the spark plug look like, if the plug is white jet up one and raise the needle.if its real dark do the reverse. i do think you will have to jet up.i am running a 147.5 main jet. hope this helps

 

with the supertrapp and uni you must be running lean.
The supertrapps I've seen and install to include mine instruct you to rejet.
I suggest a jet kit but if not turn your air fuel mixture screw all the way in then back out two and a half turns and bump up the main two sizes, if you want to get the most out of the pipe a dynojet kit does wonderfull.
Start reading your plug, if you don't know how go to the ngk site and they have pictures with explinaitions.
Good luck!!!!

 

You are probably lean. My guess is that you see the problem in the snow (winter) due to the increased air density in colder temps.

Go up on your main one or two. You won't hurt anything by going rich.

My.02

 

cold weather, i have a lrd ad run a uni too, it cutted out lastnights year. i messed with the main and got it right on, when spring come around i witched it back to the 1 i had in it.

 

sorry for the late post but its actually just your spark plug, i posted a couple posts about this, does it blip you mean? ....

 

If you haven't already done this do it now. You will need to change your main jet to a 148 which is prolly bigger than the one you have now. When i bought my white brother e-series exhaust that is what i have had to do and i am 850ft below sea-level. So try that and tell me if it helps.