F.A.S.S FUEL SYSTEM...(OPINIONS)
I'm thinking of puchasing a Fass system for my 2007 W900L (2006- ISX 565 engine). I would like to hear some opinions from current owners of the fass system. How much fuel mileage should i expect to gain on my application? How hard is it to install ? What GPM flow rate do i need? Where can you find the best deal on one?