Usually you will see an increase in MPG but as Kyle said it isn't guaranteed due to lots of diffrent factors. i made a 5" system last week for my truck and i can tell you this it did make an improvement in EGT's. Mileage really isn't my concern with this truck:lol3:
By made i mean i had some pieces and parts left over from some installs of aftermarket systems and some 90's and 45's and i have mad welding skills:w: so i made it and it is much quieter then 4" that was on there and flows better too
Well thats a good choice in exhaust systems. It will help lower the EGT's give you a boost in Horsepower and Torque However we dont test for fuel mileage on any of our systems. It makes sense that you should get an increase but there are alot of factors that go into it. But you cant go wrong using ours. I think its worth the money. Can Never Go Wrong with a Lifetime Warranty.:thumbsup
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