flashpaq
-
My new to me 2018 Yukon Denali Ultimate
2 months ago I purchased a low mileage 2018 Yukon Denali Ultimate. Since then I have put 5,700 miles on it with an overall average of 20.5mpg. 125 miles ago I installed a 91 performance tune and turned off AFM using a Flashpaq F5. So far my mileage is at 22.3. Near plan is to do a full...- MrMonte
- Thread
- 2018 denali flashpaq mpg ultimate yukon
- Replies: 4
- Forum: Introduction
