I loaded your custom tune to my f350. Really happy with the power when pulling my fifth wheel however, the transmission (twice) started venting fluid while towing. Has this been an issue after the tune? Is there an adjustment that needs to be made to my tune? ( Justin Baker, 11/27/2022 )

This issue is unlikely to have been caused by the tuning but you can return to stock to see if the issue occurs then. The 5R110W transmission in your truck has a known issue of venting fluid and TransGO actually makes a kit to correct the issue: https://transgo.com/product-details/5r110-vent-stop-leak/

Not sure if this went through…repeat question
2001 e450 v 10 with 90k miles
What is a sct v4 device? Do I have one?
What is an ecu strategy code ? Do I have one? ( M. Mizen, 06/14/2022 )

We replied to your previous question . Let us know if we can answer any other questions.

2001 ford e450 v10 with 90k miles.
What is a sct v4 device? Do I have one?
Also ecu strategy code…do I have one? ( M. Mizen, 06/14/2022 )

Hello, the SCT X4 is the hand held device used to load the custom tune into your vehicles Engine Control Module ( ECM/ECU /PCM , all refer to the computer that controls the engine) So you would know if you had one of them, the ECU strategy code is what we base our custom tune on. We can get that using the VIN . You would need the UPFORD V-10 ULTRA RV TUNE , ,which includes the SCT device . The emailed Tune Only is for people that already have the SCT device .

https://www.ultrarvproducts.com/Ford-V10-UltraPower-Custom-Tuning

We purchased an update and already had a device to use. Our device says that it is married to another vehicle????? We get General Error#11023 & we can't make it work. We were told that this wouldn't be a problem before we ordered the update, so we are pretty confused.
Do we do a factory reset & then reload the file? ( Michael Schubert, 06/04/2021 )

You can only use the SCT device on 1 vehicle at a time. In order to use the device on a different vehicle, you must first return the original vehicle back to stock. If you do not have the means to do this, you can contact SCT directly to have the device "unlocked".

Will this tune up void my Ford warranty? Only have 4,435 miles on my new RV. ( Douglas J Huston, 05/19/2021 )

Having the tuner alone will not automatically void your warranty, however, if you are concerned about it we recommend just waiting until after you are out of warranty coverage.