EFILive Single 2019-2021 6.7L CMF Cummins Tune

Great customer service answered all my questions Tune’s work great on my truck and everything arrived to me super fast couldn’t ask for better service

Great tunes. Send the guys exactly what I had they were able to hook me up with some great tunes and multi stage switch. I was extremely surprised how well their tuning is. Went from a smarty jr and boy it opened my truck right up. Time will tell! Great tech support as well for downloading everything.

My truck had several issues and they resolved all of them super fast with tune revisions! Can’t say enough good things about the TUNE SUPPLY SHOP!

I was happy with the service and the parts I received! Installation went well and the truck sounds and runs good. Thank you!

Great customer support if you have any questions at all

A+

Flo Pro 11-19 Powerstroke 4" Stainless DP Back with Muffler

Highly recommend

Very well built kit and TSS has some of the best customer service and shipping that I’ve seen in awhile. I am glad I have found them!

Great customer service and quality parts.

MotorOps HP Tuners 2017-2019 SWITCHABLE Duramax L5P Tune

Works mint!

I love my truck now!!. It feels amazing!!. Didn't encounter any issues!! Still need trans tuning though. Hoping to get that soon.

Great people to work with great customer service and support