i have one on my truck its alright i picked up 7hp and 10tq i can feel alittle difference and it revs alittle faster and u lose a little weight my stock one was 12 lbs and the asp is 9 but it does slow down the water pump and fan and if i dont watch it it will get hot if i am just sitting there in 110 dregree heat now that its cooled down out i dont have a problem. i need electric fans