Banks system

[Finhawk]

I had the Banks and Ultra-power installed on mine when it hit about 4000 miles. The average milage didn't change----about 6.5 but 8.5 once-----still haven't figured that one out. But the power increace was worth it. Especially going west over the Rockies into Wyoming on I-90.
I'm sure that my milage will decrease since my new Toad weighs a bunch more than the old one. But what the heck, it's all part of the RV lifestyle!

[Iron Man]

You may not see a great increase in fuel mileage, but you should get more power with the same fuel mileage. Most engine computers are set up for the the "average performance and mileage". The Banks systems replaces some components and changes the spark/fuel curve on the computer for better performance. When performance increases we tend to take advantage of the power.