Tuning The Freightliner - Detroit truck parked. similar to a truck that has been tuned by Alt Tune

2013 Freightliner

14.8L – DDEC6 ECU

The Challenge

The Freightliner truck is a powerful and reliable workhorse that has earned a reputation for its performance and efficiency as a heavy-duty commercial vehicle. The Freightliner offers impressive power and torque for a wide range of applications. However, for truck owners and fleet managers seeking to elevate their trucks’ capabilities, ECU remapping offers an exciting opportunity.

In this post, we are looking into how tuning the Freightliner truck can optimize its productivity and operation. We are using a 2013 Freightliner with a DDEC6 ECU we tuned for a customer as an example. The customer looking to optimize their fleet operation. Here at Alt Tune, we have the tools to help with that.

The Solution

ECU remapping is a process of reprogramming the engine control unit’s (ECU) software to optimize engine performance. For the Freightliner’s DDEC6 ECU, this entails recalibrating various parameters, such as fuel injection timing, turbocharger boost pressure, and air-fuel ratio, to unleash additional power and torque while maintaining reliability. To do this we used Alientech KESS3.

But that is not all ECU remapping can do for truck owners. As a truck owner, you want your truck to run reliably and have it spend as little time as possible in the shop. Many trucks have issues with the emission systems which means they spend too much downtime. But we have a solution to that problem. Adjusting the emission system through the ECU remapping and fitting it to our tune means that the Freightliner can run smoother and faster on the road and spend less time in the shop. Tuning the Freightliner truck presents an exciting opportunity to optimize its already impressive performance and capabilities.

Increased Power


Power Increase (HP)


Torque Increase (NM)

Further Benefits Of Tuning The Freightliner

Increased Power and Torque

With more power and torque, a tuned truck can handle heavier loads and perform tasks more efficiently. 

Years of Development

We have been tuning the Freightliner’s 14.8L engine for years, and understand how they work as well as the limitation on factory hardware.


Easy and fast programming

Easy, fast and non-evasive via programming the factory-fitted diagnostic port.

So, if you’re looking to take your Freightliner to the next level, don’t hesitate to reach out to us! Our dedicated team is ready to unleash the full potential of your vehicle and make your driving dreams a reality!


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