I'm in my fourth year with the new ECU programming from 5 Star. Well worth the cost. The big change, for the five speed transmission, was the shift philosophy that reduces the rapid down shift out of OD on minor incline into third gear and 4000 RPM. Regarding fuel mileage and general performance increase I haven't noticed either. If the mileage did improved I'm probably killing it with the better acceleration and throttle response.
What I don't know is how effective the change is for the V10 with a 6 speed transmission so if you chassis is 2016 and newer not sure if the cost is worth the change.
__________________
2006 Hurricane 31D built on a 2006 Ford F53
|