you will either have to mod your throttle cable or get the raptor throttle cable too. i didnt go to the raptor carb for power gains, i did it because for some reason i just couldnt get the stock warrior carb to tune, dont know why just couldnt, so the raptor carb is a simpler design with no accel pump, but seeing as in i will never have the quad on a track just in the woods and farting around in feilds i wont miss it, but now that i got a 165 main and 25 pilot in the raptor carb this bike is a beast!! the throttle is very crisp even despite the lack of accell pump. when riding season arrives i got a couple buddies with filter,pipe,jetted 400ex's that id like to see how i fair against, not expecting to beat them just looking to compare