Scrambled Tune Files

[Eric@HPTuners]

A common problem when tuning a car that has been previously been tuned is the "scrambled strategy", where the calibration IDs in the calibration has been modified so that no tuning software will recognize the calibration.

We've been working on a few things to help with this.

A few of the newer ECU's cannot be read and this problem does not exist because we offer a virtual read that matches up the calibration to a stock calibration stored on our server. We are rolling out an option virtual read for the ECUs that can be read now. So in the case of a previously tuned car, you have the option to do a virtual read and know you have a 100% stock file.

Since this does not help on a vehicle with a scrambled ID, since it will never match with a stock file, I will show you how to generate a compatible stock calibration.

NOTE This will only work on serialized ECUs. In the Ford world, this means only the Tricore based ECUs.

The first step is find the serial number off of the ECU itself.

Next step is to head over to the Ford AsBuilt website. Plug in the VIN from your vehicle, and do the security check. Hit submit.

You should get a result like this:
1.jpg

Click download and save the .ab (Asbuilt file) someplace. Then open it with a text editor like Notepad. Once it is open, Ctrl+F and search "14C204".

2.jpg

This will get you to the Software Part Number. Select the entire string, in the above example its "HR3A-14C204-XC", highlight it, right click and copy it.

Next head over to TunerTools, then click stock file provider.

Select Manufacturer and Controller, then in the Segment ID, you want to paste in the saved SWPN above. You can skip the VIN. For the serial, enter in the serial off of the ECU. Then click request, and you should get a stock file for your ECU

Note This will get you a compatible stock file, and it will be the ORIGINAL calibration for the vehicle. You can tune from here, but it would be best to update to the latest calibration with a dealer tool.

[E.A.]

This is RAD! Thanks Eric and all the team for putting in the work on this.

[bmpcamry09]

I?ve tested this on a few different F150 calibrations and works great. Thanks for this!

[Ninjacoupe]

I?m having trouble getting any results. Friends Whipple 2018 MT mustang GT. He doesn?t have his stock tune anymore and trying to come up with something. Followed the instructions and I keep getting failed as a result. I have sufficient tokens and the correct serial number and vin as well as the code from his as built data. Any suggestions?

[Eric@HPTuners]

Post up the 14C204 value from the .ab file and I'll see what I can do.

[Ninjacoupe]

I get the JR3A-14C204-AGD as the OS searching the as buil

[mstang_man]

I get the JR3A-14C204-AGD as the OS searching the as buil

Tricore298 6DH3 FMJJ1 JR3A-14C204-AGD FMJJ1S3 5.0L MODULAR TIVCT S550 Mustang 6th Gen 2017 13/06/2017

[Ninjacoupe]

Does any of this get me closer to finding a stock tune for hptuners to flash in his car? I?ve tried this information in the stock tune request and it comes back failed

[mstang_man]

if you go to fords website and put in your vin it will pull up your as built data, but to find what your looking for you would need hex editor to find the information i posted above, which is JR3A-14C204-AGD or FMJJ1S3. I did not see your specific strategy in the repository. do you have an HP tuning device? or SCT X4? if so you can read the file and download it to your laptop with HP. if you have SCT you will either read the car strategy and request a file from a dealer or thru SCT themselves.

[Ninjacoupe]

We were able to request a stock file from Whipple. Flash it to his car using the Whipple device and then o was able to read it from his car using my Hptuner MVP device. I?ll upload it to the repository here later.

[Purebred Racing]

Just went through the steps on this. REALLY cool process to get a stock calibration.

Unrelated to this process, Unfortunately I keep getting controller unlocker timout and cannot write to the pcm... Ive sent a ticket and we are working on it.