I dont know what it came off of. i bought it like that. When ever i start it in the summer i have to pump the throttle about 8 times and then play with it untill it starts, kind of a pain. In the winter the only way i can get it to start is to put it into the shop and turn on the heater till it is warm enough. I want to just be able to hop on and push the start button where even and whenever. It has a stage one hot cam and a gutted exhaust with a vito super flow insert. Im assuming this problem would be with the jets because it has plenty of spark.