Form Information Help

Please fill out all of the above information in its entirety and double-check for accuracy. We do need to know both your truck's specific rear end gears/axle ratio and its specific tire size. If you don't know your axle ratio off the top of your head, check the vehicle information door sticker on your front driver's side door and write in your axle code, which you can see in the image below. For your tire size, please write in the tire size as it appears on your tire sidewall. ECU & TCU Strategy Codes/Part Numbers and SWPN Number:

The most important pieces of information we need are your truck's ECU Strategy Code, TCU Strategy Code, and SWPN Number. Due to the fact that many of the 2015-2016 Super Dutys are no longer coming with their ECU code printed on a sticker attached to the ECU itself, we need your engine computer's internal "Strategy Code" , instead. That means you'll need to find your truck's Strategy Code using your tuner. Once your tuner arrives, go to it's "Vehicle Info" screen after you hook it up to your truck We have a tutorial for pulling your Strategy Code on a Livewire TS Tuner and Monitor on our YouTube page. Please write your Strategy code in the "ECU Strategy" field above, as well as your truck's "ECU Part Number." Your truck's TCU Strategy Code, TCU Part Number, and SWPN Number can also be found on your device's Vehicle Info Screen.

Well, what now? After you have all of the required information filled out above, reply back to this email. We'll forward all of your tuning information off to 5-Star who will then build your truck's selection of custom tunes. Within one business day, we'll send you your custom tunes attached to email. If you haven't received an email with .cef files attached within 48 hours, please check your your spam/junk folders. iTSX users can simply download the tune files from their email application on their smart phone or tablet and open them in their iTSX app. If you have a Livewire TS, SCT X-Calibrator 3, or an SCT X4, you'll need to download the latest device drivers from SCT's website before downloading your tune files. After you have SCT's latest software, you can download the tune files to your computer and use SCT's Device Updater software to update your tuner and load your tunes. A tutorial for uploading tunes to your tuner is available on our YouTube page. Once your tunes are loaded on your tuner, you can then upload them to your truck via its OBD-II port. If you have any further questions, check out our F250 & F350 Custom Tuning Page or give us a call directly at 1-877-578-2433.