I have a 2019 Thor Miramar F-53 V10 and wanted to know if I use the UPFORD Ultra RV Tune will it void the warranty? ( Joey Sineno, 11/12/2019 )

No it will not. First of all, when you tune your vehicle the, SCT Tuner stores the stock file onto the device. When you are going to go in for Warranty work, you can return the computer to stock settings. The SCT tuner, unlike other brands, leaves absolutely no footprint in the PCM history. In order to deny any warranty repair the dealership has to prove without a doubt that the Programmer was the cause of the damage. We can thank the Magnusson-Moss Warranty Act for this.

If you are overly concerned with this topic, talk to your dealer. Ultimately they are the ones that will make the decision.

The tuner if I purchase just that and decide to upgrade my air intake and exhaust is there a change in the tuning ? If so is there a charge to upgrade the tuner ? ( Matt, 10/28/2019 )

The only modification to the exhaust or air intake that would require a change in the tune would be if you added long tube headers. There is no charge for updating the tune.

I have a 2011 Jayco grayhawk. much to my surprise it has banks headers on it, which I had to change the passenger side exhaust gasket on it. very hard to do, not much room. it has the v 10 2v. engine. the rig does very well now with the headers on power and hill climbing, but does require some down shifting. how much will this improve my performance. thanks. ( tom , 10/07/2019 )

The tuning will make a big difference! Not only will it make more power but it will also dramatically improve the shift patterns, which is a common complaint.

Two quick questions:
1. Will this (UPFord) work on my Class C (2018 Ford Quantum-31LF) on a 2017 Ford E450?

Thank you in advance, ( Camilo , 10/01/2019 )

Yes this will work on your vehicle.