How to go back to stock tune to eliminate the XF7 negative response code

[Perna00]

I?ve got a 2019 f150 eco with 10r80 tranny. The truck has about 200k miles on it and I?m having some hard downshifting on deceleration. I tried to read the TCM and getting the communication code. It reads the ECM perfectly but I?m thinking maybe the previous owner had the TCM tuned or replaced with a different tune. I can?t get HP to read the entire TCM so I can?t even see the file to tune. It?s probably locked or a different tuning software. Any ideas how to get it back to stock to be able to read and tune with HP?

[skylinedan]

Best bet is to have someone with a IDS do a re flash to the most currant up to date program, from there you should be able to tune it with HP or any of the others out there on the market.

[Perna00]

Thank you for the information. I’m assuming that it would need a license like other software(?) so it might be just as good to take it to the dealership to do this…?

[Perna00]

The dealership said they can do it for $179. Does this sound reasonable?

[bmpcamry09]

The dealership said they can do it for $179. Does this sound reasonable?

Yes, just get it done. Ford has released a lot of updates over the years for the first few years of 10r80 applications that address a lot of concerns. May even fix your downshift roughness.

I usually only see the XF7 negative response code if I rush and plug my USB cord into the MPVI before plugging the MPVI into the OBD port. Make sure you plug into OBD first, wait for green light, then plug cord from computer into it.

Even if your TCM was tuned, you would be able to write over it as TCM tuning is always 'write entire' and not 'write calibration'.

[Perna00]

Got ya. I’ll have to get them to reflash it. I can’t even get a read file from it to even try “write entire” over it.

[bmpcamry09]

Good luck, once you've got it updated, send me your stock read and I can make a 10r80 file for you for free to try out. Been in development for about a year now and I've got it dialed in. Wanting some people to try it out before I take it to market.

My trans tune removes skip shifting, evenly spaces out all gear changes across the entire rev range, brings redline to 5800 rpm in all gears, cleans up some torque converter activity, much quicker downshifts, modifies torque reduction for stronger launches, and a bunch of other improvements.

[Perna00]

I appreciate the offer, but this is just for my work truck so I’m probably not too interested in all the changes. Out of curiosity… Why did you increase all the shift points to 5800 RPM? Isn’t the power band cut off before then? Wouldn’t you rather stay within your higher power areas for performance?

[bmpcamry09]

Ehhh power doesn?t really fall off that bad running premium fuel. But I set it that way because most people getting the trans tune already have the engine tuned pulling hard to 6000.