These custom EFI Live tune files are designed specifically for 2001 - 2010 GMC trucks with 6.6L Duramax engines (LBZ, LLY, LB7, LMM). Unlike ordinary files on the market, CCS offers true custom tuning. Just tell us how you use your truck, and we'll create a tune that suits your specific needs. Coopers Custom Solutions, a top - notch custom tuner in Canada, can help your Duramax make safe and reliable power. Features include single, 5 singles, or SOTF tunes. It's written for your truck, requires an AutoCal device, and supports offroad tuning. There are various power levels to choose from, like stock modified (Deletes), 25hp Tow, 45hp Economy, 75hp Street, 90hp Performance, and 120hp Race. Higher power levels are available with proper supporting modifications. To purchase an EFI Live Vin License, you need the serial number of your device and authorization codes. If your Autocal has been used by another tune provider, unlink it first. Installation steps involve downloading the latest EFILive V8, updating the AutoCal firmware, and providing us with your AutoCal serial number, auth code, and VIN number.

Hey there! Here's how to use these custom EFI Live tune files for your 2001 - 2010 Duramax. First, you'll need to have an AutoCal device. Download the most recent version of EFILive V8 and run a firmware update on your AutoCal. Then, give us your AutoCal serial number, auth code, and VIN number. You can find the serial number and auth code by going to F7 Licences - F4 Vins. Now, about the power levels. If you just want a simple tow or economy tune and don't need to switch tunes often, go for the single tune. But if you want to adjust the power according to different situations, like having more power when the truck is empty and less when towing, choose the 5 - tune option. A few things to note: these are just files, so you must have an AutoCal device to flash the tunes onto your truck. For Cab & Chassis, Topkick/Kodiak, and Van Models, we need a stock read file. And if your Autocal has been used by another tuning company before, make sure to unlink it first. As for maintenance, keep your AutoCal device updated with the latest firmware and always follow the official instructions from EFILive. That way, your Duramax will keep running great with these custom tunes!