2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI
PP-17-23-L5P-TTExtend 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
I recently switched over to PPEI transmission tuning after running a different TCM tune on my truck for the past two years, and the difference is truly night and day. The 1st through 3rd gears at slower speeds feel completely different — there’s so much less engine braking that it no longer feels like I’m dragging a brick behind me. The shifts are noticeably smoother and quicker, and the downshifts have a crisp, precise feel that really stands out. Overall, the truck just drives more naturally and refined with PPEI’s tuning. Couldn’t be happier with the upgrade. I wish i could have caught the 25% discount the day after uploading my tune but anything to support a Louisiana local!
2020 L5P with the 10l1000, had another tuners tcm tune for about a year and wanted to try Kory’s infamous tuning. With my old tuning the truck would have some weird shift points and hard shifts at times but with this ppei this truck is an absolute UNIT! Smooth as butter and holds gears. Puts the power to the ground without feeling like the trans is gonna blow up. Super solid but smooth shifts. I was on the fence about switching but so glad I did. Just do it already you won’t be disappointed.
Very pleased with the trans tuning. My truck has stock engine tuning but I’m running 35s. This gave it some pep back almost like running factory size tires. Having it shift where it needs to instead of lugging all the time is awesome!
Drastically improved the drivability of the truck, especially with the bigger turbo. Instant support from PPEI while tuning, making it a breeze.
Awesome experience dealing with PPEI!! Very customer friendly and speedy responses! Ordered a new TCM and it was delivered the next day! The PPEI team was on standby for any help needed via email and phone. Couldn’t ask for better customer service! The transmission time is spot on!!
Thank you for the help PPEI!!
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.