I added engine intake air and transmission cooling air ducts from under the seat to under the hood high beside the radiator in mine. Sprayed bed liner insulation on panels under the seats and plugged the air entrances from cab to underseat Improved the power enough to notice, significantly reduced the noise in the cab, and made a huge difference in how quick the air filter gets dirty. Also built a metal cab to replace the POS fabric one that Massimo sells (or did). No trying to figure out how to improve the shifting???
