For factory emissions equipped vehicles only. We do not provide tunes for vehicles with emissions equipment removed, and there are NO REFUNDS on tuning if you are expecting these tunes to work on a truck with modified emissions systems.
- This is custom tuning with a lead time, orders are typically processed 1-2 business days after ordering, but can take up to 10 business days depending on the vehicle.
- 2500HD/3500HD pickups only. Cab chassis, Kodiak/Topkick, and Vans are not supported.
- We also offer an Autocal rental program to save money on the device! You will pay a rental fee + vin license + deposit up front, and we will send you an Autocal with a vin license. You will have 14 days after receiving your order to flash your truck, and send the Autocal back for a refund of your deposit. This service is not recommended if you expect to need any revisions for parts changes in the future, as you will have to pay for this service / new vin license each time you rent an autocal.
- Be sure to read the instructions carefully when flashing LLY trucks. Failure to remove fuses when flashing can brick your ECM and leave your truck inoperable.
Optimized Stock 0HP
Heavy Tow 30HP + turbo brake in tow/haul mode
Light Tow 60HP + turbo brake in tow/haul mode