2011 - 2016 GM 6.6L LML Duramax | Engine Tuning by PPEI.
2011 - 2016 GM 6.6L LML Duramax | Engine Tuning by PPEI.
2011 - 2016 GM 6.6L LML Duramax | Engine Tuning by PPEI.
2011 - 2016 GM 6.6L LML Duramax | Engine Tuning by PPEI.

2011 - 2016 GM 6.6L LML Duramax | Engine Tuning by PPEI

PP-LML-ET

CARB EO Pending

PPEI's LML tuning provides 150+ HP gains over stock, towing effortlessly, and increases acceleration drastically. Tuning engineered for optimal efficiency.

  • Level 1: +30 HP
  • Level 2: +60 HP
  • Level 3: +100 HP
  • Level 4: +120 HP
  • Level 5: +150 HP
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Who is the tuner/calibrator

PPEI, also known as Power Performance Enterprises, Inc., is led by the business owner and lead calibrator/tuner Kory Willis. PPEI began calibrating/tuning back in 2008, specializing in Diesel Performance but has since expanded into the Gas and Powersports industries. Kory and the team at PPEI have set many world records along with continuing many industry “firsts.” We take pride in knowing that Kory not only prides his work but also thoroughly enjoys setting expectations high for our team so our customers can have the best products and service in the world.

What does PPEI’s tuning do for my LML Duramax

  • Tuning is intended to increase the horsepower (hp) and torque (tq) the engine can produce. OEM manufacturers, like GM, show vehicle hp and tq based on the amount of power produced by the engine, at the engine, which is 397 hp and 765 lb-ft of torque. 
  • PPEI, unlike the OEM, measures hp and tq at the wheel. What does that mean? – It means PPEI measures power that the vehicle produces to the ground showing the amount of powertrain loss from the engine, through the transmission, to the wheels. PPEI refers to this as the “baseline,” in this case, for the LML Duramax, we measured 337-wheel hp and 686-wheel tq. The baseline shows a powertrain loss of 60 hp and 79 lb-ft of tq. 
  • PPEI’s primary focus when tuning or creating a calibration is focusing on the overall efficiency. Many individuals search for the most horsepower & torque and view it as the “best tuning,” however, more times than not, it’s quite the opposite. Many tuners advertise tuning based on the highest hp & tq, surpassing the threshold of efficiency. When the threshold of efficiency is overpowered, issues start showing up, which can be as minor as poor fuel economy or as significant as transmission and engine failure.
  • At PPEI, we love our performance, but we develop all calibrations around reliability, giving you peace of mind no matter the situation. Whether you’re at the dragstrip or hauling a heavy trailer across the nation, PPEI’s LML calibrations redefine the limits and safely go beyond the OEM’s performance. 
  • PPEI’s LML calibrations produce up to an additional 141-wheel horsepower and up to an extra 245 lb-ft of torque above the OEM baseline. PPEI’s LML performance calibration brings the overall horsepower up to just shy of 500-wheel hp and 950 lb-ft of torque. Furthermore, PPEI offers a seamless method to change between 5 different power levels (tunes) through the turn of a switch. Each tune serves a specific purpose. However, some people may say, “just leave it in the highest hp and drive easy.” PPEI does not recommend that method. Here is why PPEI suggests using the proper power level for each specific driving condition.

PPEI LML Power Levels Defined

Customer Reviews

Based on 7 reviews
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Les Grenfell Jr
Great tune

I was hesitant in buying this tune because of the price of the complete package, decided to get it all. (Tuner, all 5 tunes, trans tune) So far it's been great, did notice a big difference, the trans tune is great, made a noticeable difference in shifting. Just wish they could include the better instructions and labeling to install it, the ones online weren't close.

T
Tai Tran
Ppei tuning tech support

First class tech support!!

B
Brad Benson
Complicated Issue - Great Solution

Kory gave great service and fixed a complicated tuning issue with a full emissions LML Duramax converted to a CP3 that had one of the most stubborn fuel surges anyone involved has ever come across.

C
Charlie Johnston
Great customer support!

I just placed my order for a single tune and TCM tune. This was my first tuner I have ever placed. I made some mistakes on my original order and sent a email asking questions Justin Granger took very good care of me. If this is the type of support PPEI gives there customers I will be ordering all my tunes from them with upgrades to my truck. Justin went way above any customer service I have ever had with a order I’ve done online.

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Luke Littleton
Just do it...

After being on the fence about buying tunes that are emission compliant. I finally pulled the trigger on the 80hp single tune for the ECM and TCM tuning. The support PPEI provides to both customers and potential customers is top notch. I created a ticket to ask questions, and Chad Cole helped me find the best tunes for my needs. I couldn’t be more happy with the performance of my LML with almost 15% gains across the board.

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WHO IS THE TUNER/CALIBRATOR

PPEI, also known as Power Performance Enterprises, Inc., is led by the business owner and lead calibrator/tuner Kory Willis. PPEI began calibrating/tuning back in 2008, specializing in Diesel Performance but has since expanded into the Gas and Powersports industries. Kory and the team at PPEI have set many world records along with continuing many industry “firsts”. We take pride in knowing that Kory not only prides his work, but also thoroughly enjoys setting expectations high for our team so our customers can have the best products available in the world.