New member
Here are the current files. There is no code in this tune for an auto trans. This is still very helpful for anyone tuning on an EFI six with an auto trans as the stock engine parameters can be ported over to Decipha's A1C tune that has all of the auto trans code built in. This would not have been possible without the guidance and work of Decipha. I simply adapted his XDF and ADX files to my stock 4.9L tune with his help. Datalogging is working but has a few items that are not working yet. I'll post updates if/when they are fixed.

Anyone who is curious about tuning the stock ECU should download Tunerpro, load these files into it, and start poking around. There is a lot to learn.
Thank you so much for uploading this! I look forward to being able to use it!


Well-known member
Supporter 2021
This has probably just changed my plans for my rebuild! I have one of those unicorn trucks with MAF and OBD2. I'm going to start digging around and I'm sure I'll have questions.