Okay so, today I was setting my truck back to stock. It started to download the stock file and then it got to 1% and my lights flickered and all my lights came up on my dash. Error 110D8 failure to write data to vehicle and tells me to put the vehicle back to stock. Truck is dead in the water right now. Not sure what else to do right now. Any help would be appreciate it!

 

Here's a bump for ya.

 

SCT X4? What was your battery voltage before you began to flash the ECM? Proper battery voltage is very important for the various modules. I use an SCT x4 on my car and hooked it to a trickle charge when I tuned it. Since you have a 2011, you don't have to worry about a BMS. I close the door so all of the interior lights are off, radio off, A/C fans off, etc. and worked through the open driver side window so I could walk around while it was flashing without causing network traffic such as opening the door. It's also possible your stock file is corrupt. Did you take a backup of the stock calibration on your computer (it's a .bef file)? Call SCT on Monday and they'll likely help, you'll need a Windows laptop with an internet connection. I use the EZ LYNK for my truck and didn't hook the batteries to a charge the first time I tuned it but got lucky, likely because we have plenty of capacity with these trucks vs a single small car battery.

If this were my truck and it's Sunday... I would disconnect the batteries for an hour, reconnect and then I would hook it to a charger and ensure the voltage is at least 12V. <11.7V is not good and you'd be surprised how quickly it drops with the vehicle in KOEO. Then KOEO, turn off everything, roll down the window, close the doors and begin the process from outside the vehicle. If it still fails, your stock file may have issues or there are other issues and you need to talk to SCT support for possible options. I tend to experiment a little but these modules are expensive so if your battery voltage is good and you aren't comfortable retrying, just wait and call SCT when you can and provide a clear problem description.

 

Hmmmmmmmm..

 

Do you have the SCT X4?

Connect the X4 to your computer via the USB cable. Open SCT device updater (Derive Systems). Select at the bottom "get stock file from device." Follow the on screen instructions.
https://derivesystems.helpjuice.com/...6005-downloads

You should already have this software as it would have been needed to update the device and upload the custom calibrations prior to tuning. Did your device already have the calibrations for your truck? I don't think you can retrieve those because those are already saved files on a PC (someone's) that were then uploaded to the device. You would need to contact the tuning company for those .cef files or whoever you had do this for you.

I do not think you can self restore this .bef file to a new device (different file format than .cef custom calibrations) such as after device failure or theft. However, at least you have a copy of the stock calibration and then you can work with SCT to purchase and pay to get this on a new device, whatever their process is.

 

Hmmm .....

 

Okay so today me and my dad worked on it.. called sct.. walked us through everything and got the truck running.. so I take it for a test drive. Built absolute so boost and so I go back home and figured I should just redownload my tune. Now I'm back to where I started. I did disconnected the batteries and did everything the guy said to do from sct like unhooking the batteries and holding the positive and negative terminals on the drivers side for a minute and a half. So I put the charger back on the batteries and back to the same spot where I was.. so I went and bought 2 brand new batteries to just try to eliminate the voltage issue and even put the charger on them too. Still doesn't work.. so tomorrow is another day I guess.

 

Have you spoken with Tyrant to rule out a bad calibration file? That's my next suggestion if you haven't. Beyond that, I can only think of towing to and needing to pay a dealer or an independent shop who has IDS (preferred) to flash the ECM back to stock (which is going to cause a mess if without the emissions equipment) and then try to load a known good and compatible calibration. An independent diesel shop would be the better option, especially if they are "tune friendly."

Is your emissions equipment installed? If not, why were you flashing it back to stock?

 

My dads friend is the head diesel mechanic at one of my local dealerships. He set it back to stock yesterday. (As crazy as it sounds) me and my dad lined up and raced. He smoked me. We both have SOTF Tyrant tunes. His truck is a 12. Called the place where we bought the tunes from. (Don't want to just blurt they're name out but they are a good reputable company) and they said if we set our trucks back to stock we can switch tuners and see if my truck runs different or up to the potential of my dads. Went to set it to stock and this all happened. Hahah

 

Tuners are usually locked to your specific vehicle and you cant use them in a different truck. If your truck has been returned to stock and you want a tune you need to download a good tune from someone and pay them for it. then load the good tune back in your truck. You may be running the rick of blowing up your computer doing this to your truck. If you are not sure what you are doing take it to a tuner shop with a dyno so they can tune your truck correctly.

 

I've personally seen the SCT do this to a few 6.7's, Ever since then I've always used a battery charger when changing tunes, and had zero issues. Even if the batteries passed what Derive/SCT said was good enough voltage. Something to think about in the future.