Tuning 08 H2 6.2l engine via shop
 

Technician using HP tuning inquired of 6.2 L rpm at 70 mph. Attempting to squeeze gas mileage at my cruising speed without losing low in performance. Advises he can gain some through timing advance. I have no ideal please help ASAP. A TEXT would be even better as tech has H2 on laptop and dyno NOW. thanks Robert Okx. ok
405-683-2389