I was just wondering if anyone has tried a supertrapp Exhaust on a prarie 400 4x4. My dad told me of a fello on our deer lease (who had just got off it), that made this mod and said it "dang near pulled the wheels off the ground". He also said that he had to play with the amount of plates used in order to get the best response.
If this modifacation was made, would it be wise to rejet at the same time?
Do the two go hand in hand?