Collection: 2004.5 - 2005 LLY Duramax Tuning

Duramax Tuning totally customized to your needs and modifications! Are you tuned by EFILIVE? No, EFI Live IS A Custom Tuning Suite that allows us the ability to write you a custom tune. 

A large upgrade from the 2001-2004 LB7 Duramax; the 2004.5-2005 LLY Duramax ,although a short run, brought some major improvements to the Duramax Diesel engine line up! Starting with a Variable Vane Turbo charger, the most noticeable difference from the previous years, the LLY also brought a small bump and power with the new technology! Variable Vane Turbochargers most notably known for quick spool up over a fixed vane, also brought in the ability for exhaust braking! 

The LLY engine also brought a slightly better Injector setup to the table, and not nearly as problematic overall. Other than remaining a 5 speed with the older AL5 TCM Transmissions Control Module, the LLY laid a great path for the LBZ. Getting rid of your DPF? Don't worry the LLY is PRE DEF and DPF. Meaning there is no need to have to delete your truck or worry about fines or DOT/EPA. The LLY does come with an EGR but does not limit or inhibit the performance of the truck with proper tuning and parts!

Most noticeable gains and changes when Tuning your LLY Duramax over previous year-

-No exhaust brake button from OEM leave opportunity for Custom Tuning to fill the void. Add real exhaust brake functionality in tow tunes.

-NEW ECM- Far less communication issues and flashing issues.

-The largest GM OEM VGT Turbo- Large overhead gains with power. Near 600RWHP gains possible with supporting mods (Trans).

-5 Switchable Tunes on the Fly

EFILive is a tuning tool that allows you to adjust the engine control module (ECM) and transmission control module (TCM) of some vehicles. It's often used on diesel trucks, but can also be used on other vehicles. EFILive allows you to electronically access and modify the data in the vehicle's stock ECM and TCM. You can use EFILive to build custom tuning calibrations.You can load the custom calibrations onto the vehicle. 
EFI LIVE FlashScan V3: Allows you to scan, data log, and reprogram your vehicle 
AutoCal V3: A handheld tuning device that allows you to read and flash, store tune and log files, and more.

How does Motor Ops tuning improve an LLY?

Motor Ops Tuning will deliver unrivaled reliable power and torque delivery. Our tuning creates a more enjoyable driving experience for the operator of the vehicle – meaning that you have power when you want it, a smoothly running vehicle when you don’t need it, exhaust gas temperatures that all operate under the factory parameters, and added features like an exhaust (turbo) brake that make things like towing a much easier task.  

Why are Motor Ops tunes better than competitors for LLY?

Motor Ops has specialized in delivering clean, consistent, and reliable power and torque since the company started. We understand how each engine operates, its shortcomings, and ways of overcoming issues. Our staff are industry enthusiasts and have extensive automotive and programming backgrounds. Not only do we have the know-how to deliver the industry’s most well-rounded tuning, but we also deliver the best customer service, and vehicle advice to accompany the tune.

LLY Switch on the Fly, DSP5

When you have a DSP5 tune (shift on the fly), it has opportunity to adjust the tune based on the scenario. This gives the driver the ability to flip it into a performance tune whenever they want it. Drivers want the most power they can get in each application while maintaining reliability. That’s what Motor Ops delivers with our purpose built shift on the fly (DSP5) tuning.

LLY ECM Tuning

Motor Ops tunes are clean running tunes and, in many cases, produce less smoke output than a factory calibration. Our tow tunes are proven to have EGTs 100F lower than a factory calibration under load. Our tuning achieves market leading power gains without running high timing rates like many other tuners do; in fact, our tuning is within 2* of the OEM timing maps. All of these things will keep your truck on the road and prevent premature wear or engine failure on your LLY.

LB7/LLY TCM Tuning

Transmission tuning is strongly encouraged for any users going above factory power output. Motor Ops Transmission tuning addresses shift points, shift timing, and torque converter lockup strategy. We are not able to control line pressure on the LB7, LLY, LBZ, or LMM trucks like we do on LML and L5P trucks BUT addressing the shift points, shift timing, and torque converter lockup strategy on LLY trucks does improve the drive-ability drastically; if a user has larger tire size than stock, and aftermarket turbo, or just doesn’t appreciate the way their truck’s transmission operates the transmission tuning will put a smile on their face.

EFI Live for LLY?

Most LLY owners go with EFI Live because EFI Live has developed DSP (Duramax switchable programming) which is also commonly referred to as switch on the fly. 

EFI Live Auto Cal V3 follows a more traditional tuning sequence where the tuning company such as Motor Ops loads their tunes onto the EFI Live Auto Cal and the user simply plugs the EFI Live Auto Cal into the OBD2 port and the tune is loaded in using the EFI Live Auto Cal to carry out the commands.  We also provide simple instructions and support for EFI installations.

EZ Lynk is a cloud based tuning platform where “Technicians” (tuners) provide clients with access to their tunes via the EZ Lynk Cloud. EZLYNK is not something currently supported for LB7/LLY, but is something we are working on!

Should I have a dealer do my tuning?

Maybe half of our customers go to a Motor Ops dealer to have their LLY tuned and have other various performance parts installed if they are uncomfortable doing in themselves.  Tuning an LLY on EFI Live or on EZ Lynk is a very simple process and there are tons of resources available to the DIY guys.  Call us and we will recommend a local performance shop if you don't already have one.  Motor Ops has over 800 dealers that span across North America, Australia, New Zealand, Central America, and Europe.