5 Star Tune - 2 thumbs up.

[bigben]

Well - 3,000 miles on our Thor V10 with the 5 Star Tune! At first, MPG took a big hit but the folks at 5 Star asked me to let it settle in a bit more (after the first 1000 miles). I did and Wow - coming through the mountains of Virginia and West Virginia what a difference. Suddenly the gas mileage has gotten back to the 7 - 7.5 I was seeing while running at about 2300 RPMs and 65 MPH.

Real test starts tomorrow as we head into the Rocky Mountains of Wyoming. But right now I am confident that we'll be fine.

Thanks 5 Star.

[JamieGeek]

Great; loved our tune in our old truck.

[thor293]

Awesome news! I only have about 500 miles on the tune at the moment. Love the better shifting habits of it though.

[Nursx2]

Tell me more about the 5 star tune! Did you just order it online and install yourself or have to take the RV to them? I need to get rid of this 75 mph governor!!!!!

[JamieGeek]

The best way is to give them a call. They need the calibration number of your engine computer so they can send you a matching one.
The number is usually on a sticker on the ECU. You can also have them send you a programmer and use that to read the number out of the engine.
Once they have the number they will send you the calibration (either in an e-mail as a file or send you the programmer if they haven't already).
The programmer is included in the price of the tune--in my F-350 case it was an SCT X3 (looks like they now use an X4).
1. Ford 1996-2016 6.8L V10 RV / Motor Home ONLY! SCT X4 with the 5 Star Tune - 5 Star Tuning
They can also make the tune custom for you (like moving a shift point--one person on the Ford Trucks forum had them make it hold the gear a bit longer to avoid certain gear hunting situations).