10r80 true motorsports 10rstager transbrake on a 2020 F150

[smithspeed]

So we have disabled all the codes, but still get a "Wrench light" when I engage the transbrake, and then it won't shift from 1-2 until the wrench light goes out after the button release (maybe 5 seconds) Nothing in the logs, no DTC's no freeze frames. Anyone got one of these to work they can share, or point me to where I need to make changes, or do I need to change the OS to get this to work?

[veeefour]

There is a way but you wont find it here nor for free.

[bmpcamry09]

G0Fast made a post about this. It's a newer post. But here is what he found, been looking into this myself:

"I'm sure there are multiple ways to get the 10rstager transbrake to work properly on an F-150, but this method was tested on a 2020 F-150 5.0L track-only vehicle. This info is for educational purposes only and for track use only. The transbrake parameters are not included in the standard F-150 OS, so you'll need to use the ZRFT3C5 OS, search for it and you will find it. Using that as your base file, compare it to the current calibration for the vehicle and adjust any settings in the new OS. IMPORTANT: Do not write the ZRFT3C5 calibration without first comparing it and making adjustments for your particular vehicle. Go to the OS tab in the software and apply the custom OS, then go to Trans Diag and set the Short to Ground Fault Upcount to 0 for Solenoid B,C,F. Follow the 10rstager install guide to make any other changes to the calibration to prevent DTCs when the transbrake is engaged. Save the file under a different name. When you are ready to write it, write all to overwrite the current OS on the vehicle."

[smithspeed]

thanks I figured it out and was going to follow up, I downloaded a whipple tune and noticed everything I needed was in there and adapted it across. It solved all my issues once I got all the tune pieces sorted, I did find I couldn't copy all the parameters across as it would then light up a bunch of check engine lights (stock to whipple), so I had to selectively copy across differences to get it to work. Truck gets torn down this week and we are putting twin 6466's on it, staying stock motor for now and see how it lasts at ~1100whp, has lots of upgrades just stock block and heads (upgraded springs/retainers/chains)

[bmpcamry09]

Nice!!!