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

Amazed

After receiving the ez lynk and installing the tunes I am totally satisfied with the results with all of them from 30hp-120hp. No more dead pedal feeling with instant throttle response. You can feel the difference immediately after install. Customer service has been excellent with tickets being resolved almost immediately.

Great product

Excellent customer service to help me with my order and even with a small issue I was having on my end with EFI Live and a sensor. Zach was a great help walking me through the EFI Issue and Kory took the thine to work with me on my sensor issues and diagnosed it for me. Great team couldn’t ask for better service. As far as the tune, my 2016 GMC3500 is a completely different truck with the single tune and transmission tune. The truck is awake!!

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.