what size jet

[400exridertrd]

What size jetting should I use with the sparks complete exhause and air filter, air filter screen. They gave me a 152 main and 45 pilot. I would think that was to lean, I ride at dumont dunes and glamis. I believe its higher elevation. thanks

[VegasEx'r]

Dumont & Glamis are low elevation spots (400-800'), so you will need some larger jets. I would think a 45 is too big, but I know thwere are some here who run it. I run a 38pj (stock) & 170 main with the mods below. What else have you got on the quad, and is it a 400 or something else? Let us know & we can help you out.

[bmf400ex]

your main is prolly ok, but try a 42 pilot, that may be a bit too rich. but go ahead and try it first.

[400exridertrd]

the mods are sparks x-6 complete exhaust, sparks rev box, sparks filter and open filter screen, advance ignition key and thats it. The whole kit came with a 152 main and 45 pilot. I just installed those mods do you think I can beat raptors up hills in dunes? I was thinking of getting a 14t sprocket, but there is debates on that in dunes, what do you think?