Underdrive Pulleys... Got one?
Does anyone have the underdrive kit on their truck? Did it help your MPG any.. is the power gain worth it? I read somewhere that a company makes a 20% one that is junk and another company makes a good 5% one. I know very little about them and dont want to sacrifice the longevity of my truck but i would definetely like some free hp and mileage.
Where to get and how much??
Thanks!
Where to get and how much??
Thanks!



