Description
Our Heavy Tow Custom Tune
Emissions Intact you do not remove your emissions equipment
Safe for Towing Heavy
Increase power, not EGTs (Exhaust Gas Temperature)
Air:Fuel Ratio limits built into calibration to limit soot production
Designed to tow 8,000 lbs GVW
Factory turbo brake retains complete functionality
Horsepower & Torque Increase +20 RWHP, +36 ft-lbs
Get your trailer up and moving more quickly
Lug in the gear you want while towing
Have enough power to Shift Up, Throttle Back
Revised pedal sensitivity
Low speed trailer maneuveringBack up with trailer without lurching
Custom Tuning from DuramaxTuner.com
Fully customized tuning with more than 100+ calibration changes from stock
No hacking wires into control units or fuel pump and turbo sensors
More power and less soot than box programmers
World Class Customer Service team that actually answers the phone!
Who Benefits from this Tune?
Over-the-road driver or tows things for living
Large boat owners
Pulls construction equipment
Welding rig with lots of added weight
Need to tow in the toughest situations
Tow trucks and heavy service trucks
Tows 10,000 miles or more every year
Tows through hills, mountains and inclines
You can use this to tow lighter, but you’ll get slightly better MPG with our Light Tow tune
Better yet, get all five of our custom tunes withSwitch on the Fly
Required Options
SPADE / EFI Live Autocal v3 Required
SPADE (Standalone Programming And Diagnostic Equipment)
a.k.a. EFILive AutoCal V3
Simple to use, handheld OBD flashing (programming) hardware
Scan tool Log engine data for trouble shooting and diagnostics
Flash unlimited number of updates for your truck
Flash multiple trucks with the same device
Individual tunes and license required for each new truck
Up to 600 VIN slots available
EFiLive License is included when purchasing hardware from us
If you already have the hardware from another vehicle you will need an additional license and we will need the Serial Number and Auth Code for your device.
Recommended: 68RFE Transmission Tuning
Fix the factory calibration without sacrificing reliability
Electronically controlled line pressure
Increased clutch pack holding capacity
Very Important for heavy towing and peak performance applications
Adjusted Shift Points
Allows for stretching the wide torque curve provided in the 6.7L Cummins
Makes the truck feel more powerful
Torque converter lockup strategy
Getting rid of the short shifting
Use all of the potential power
AISIN (FYI)
The Aisin transmission is most often (but not always) found in the 2013-2021 HD Cummins Cab & Chassis pick-up truck models. It was an available option for standard pick-ups as well but, came with a price tag. Your Aisin equipped Cummins will run better than it ever has before with our Custom Engine Tuning, but at this time there is no transmission tuning available. Our engine tuning for your truck is specifically designed to maximize the full potential while maintaining the reliability of your truck. Others may run a 1-size-fits-all when it comes to 6.7L Cummins engine tuning, but if you have an Aisin transmission the difference is significant.
G56 (Manual Transmission)
The G56 Manual transmission isoffered through to the 2018 model year. The factory clutch can handle a reasonable amount of added torque with an adult driver at the wheel. For these trucks, you get all fourCustom Engine Tunes in individual files. Our Engine tuning for these trucks takes into account the difference in engine operation for manual transmission trucks.
