2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI.
2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI.
2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI.
2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI.
2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI.
2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI.

2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI

PP-17-23-L5P-TT

Extend your L5P Duramax's transmission's life and increase your fuel economy with PPEI's T87A/T93 Transmission tuning! A MUST for tuned trucks with additional torque.

PPEI was the first to offer transmission tuning for these new allisons and we have not let off the throttle since!

The refined shift points get rid of the low rpm “Lazy” feel these trucks have that force the driver to stab the throttle for a downshift – not cool and a fuel economy killer! For vehicles with larger turbochargers, ppei transmission tuning is a must to get the engine back into a rpm range to match the torque curve of the new turbo.

Along with the improved shift points, PPEI also refines the torque converter lockup strategy to put the power to the ground much more efficiently for improved fuel economy by eliminated unnecessary slip in the torque converter – which also drives down heat in typical “unlocked” conditions.

Lastly (and possibly the greatest benefit) is the increase in line pressure ppei provides. line pressure increases the holding capacity in the transmission by clamping the clutch packs together with more force – this allows tuned trucks (or trucks towing heavy) to have the confidence they need to enjoy their truck for years to come.

This tuning package can be installed using an PPEI RTD, HPTuners MPVI2/3.

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Customer Reviews

Based on 26 reviews
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A
A.L.

Love it

D
Dillon
2022 Transmission Tuning

Transmission shifts so much better, tunes are great customer service was even better! Logan was such a huge help!
Wish I I had done It sooner!

S
Shane Morse
TCM tuning

Trans is very nice after tuning!! Highly recommend you guys!!!

E
Ethan Davis
2018 6 speed Allison

I really debated about the trans tune for a loooong time, finally decided to bite the bullet, I just hated the way this truck would lug down the road. I pull a 15k camper and decided things needed to change and what a difference! Better shifts, better shift points, so glad I did it, thanks for the great product and service!

C
Christopher devore
Trans tune

I am terrible at computers but the step by step instructions were on point thanks again

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.