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PPEI EFILive Autocal w/Custom Tuning by Kory Willis & 5" Downpipe Back w/Muffler | 2011-2015 Chevy/GMC Duramax LML 6.6L

  • Deletes the DPF, CAT, EGR, & DEF systems without trouble codes
  • Swith-On-The-Fly (switch required)
  • More Power, Better Economy
  • Exhaust fits EC-CC/SB-LB Dually with v-band clamp (2011-2015)
Availability: AutoCals are tuned to your specific vehicle after purchase, please allow 2-3 business days for order fulfillment.
Pricing: $1,704.00

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This performance package includes the PPEI EFILive AutoCal w/custom tuning by Kory Willis and Flo~Pro 5" downpipe back single exhaust with muffler for your 2011-2015 Chevy/GMC Duramax LML 6.6L diesel without the 4-bolt flange.

PPEI EFILive AutoCal w/custom tuning by Kory Willis

The PPEI EFILive AutoCal w/custom tuning by Kory Willis for your 2011-2016 Chevy/GMC Duramax LML 6.6L diesel comes pre-loaded with 5 power levels up to +200HP and features Shift-On-The-Fly tuning.

Kory Willis, owner of Power Performance Enterprises, Inc. has proven himself as the most capable EFILive tuner in the industry for the LML Duramax's. By being the first in the industry to truly crack these trucks and push them to the limits, he has given himself quite a name. PPEI's is known for building horsepower but they also specialize in maximizing the efficiency and reliability of the everyday Duramax built for towing and daily driving.

Important Note: Now Featuring Shift-On-The-Fly Tuning! Requires the purchase of a DSP5 switch.

The EFILive AutoCal device from PPEI comes pre-loaded with 5 tunes for your vehicle, the existing modifications you have on your vehicle paired with tuning options selected when purchasing will determine the exact combination of levels you receive, below are the 5 most popular HP settings.

LML power levels ( Stock Trans ): Engineered for trans safe tuning.

Power Levels

Tune Level/Switch PositionHP Output Gains

Note* the 2015 + LML Duramax trucks will not come with a stock A_Flash file unless the file is requested. There is no fee for the A_Flash to be sent at a later date.

Transmission Tuning

Transmission Tuning ($299) will help prolong the life of your 2011-2016 6.6L GM Duramax LML as well as give you some big performance boosts!

While the stock tune is perfect for the transmission line pressure, this is not so once you've tuned your rig and increased your max torque; the line pressure will be lower than what is needed. To prevent this we recommend TCM tuning to achieve maximum tuning benefits! This tuning features a more aggressive line psi slope which will model a torque curve 100% above stock. The line PSI is modified in such a way that the truck will still retain good mileage, yet hold high line psi--close to 300psi under full load.

Flo~Pro 5" Downpipe Back w/Muffler | 664

  • Fits 2011-2015 6.6L GM Duramax 2500/3500 LML EC-CC/SB-LB-Dually
  • With Muffler, No Bungs
  • 100% Aluminized Kit
  • Deletes Diesel Particulate Filter
  • Eliminates Pyrometers & Air Lines
  • Increases Horsepower
  • Increases Torque
  • Increases Fuel Efficiency
  • 100% Satisfaction Guaranteed
  • Bolt-On kit w/ All Necessary Pieces

NOTE: This is a custom tuned product. In various situations, you may receive an error code when attempting to load the AutoCal onto your vehicle. In most of these situations we will need to update your stock file. If you have any issues, please contact us with error code messages available so we may promptly resolve any issues you may be having.


Shipping Information

  • Item Requires Shipping
  • 33.0 lbs.
  • W60.0000” x H20.0000” x L12.0000”
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