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Tennessee Tuned

Custom EFI Live Tune 6.7 CMF Cummins 2019-2021

Custom EFI Live Tune 6.7 CMF Cummins 2019-2021

2 total reviews

Regular price $300.00 USD
Regular price Sale price $300.00 USD
Sale Sold out
Shipping calculated at checkout.
Flash Type
Tune Type
Transmisson Tuning
  1. File Only Email Delivery (EFI Live AutoCal or FlashScan Owners): If you already have an EFI Live AutoCal or FlashScan, we can email the custom tune file directly to you. Please ensure that your AutoCal is unlinked from any previous tuner before proceeding with this option.

  2. Pre-loaded AutoCal Purchase: If you don't have an AutoCal or FlashScan, you can purchase one from us, and we will pre-load your custom tune onto it for you before shipping it out.

Please keep the following in mind:

  • Transmission tuning is available exclusively for trucks equipped with the 68RFE transmission.
  • Kindly note that AutoCals may experience high demand, and shipping may take 3-5 days.

Whichever option you select, we are here to ensure you receive the custom tune in the manner that suits you best.

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Customer Reviews

Based on 2 reviews
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Eddie Rainey
The tuners to use!!!

Ive had a tuned cummins truck since 2010, 7 total cummins trucks and currently own 3. Had another tuner write a engine/trans tune for a 5th gen truck and was sub par, shift hunted, power came in very awkward. Tune cost $1,200 from the other tuner, these guys blow that price and performance away.

I bought everything and sent one email saying i needed their codes to link my autocal v3 for their tune. I received ONE email (had 60+ with the other tuner) with EVERYTHING i needed. Installed the tune and IMMEDIATLY knew this tune was different than the others i have had for this truck. Power came in smooth and predictable, held gears just long enough to give a sportier feel. Very much recommended

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Eric Harms
Tennessee Tuned is great!

Awesome customer service from to start to finish. Help was only an email away. Clear instructions. Very impressed with the tune. Glad to finally have the switchable tunes. Immediate difference was noticed in performance. Excited to get some miles on the new tunes. Thanks to Hannah and the crew!