Does anyone here have experience with the various tuning optins for GM trucks? I have a 2018 1500 ltz with the 6.2 motor and 8 spd trans. Love the truck but the shifting is a bit wonky and i wouldn't hate a few more hp. Been looking at the diablo tunes as well as these Trifecta tunes. Anyone have experience with either or another that i don't know of? Thanks. https://www.trifectaperformance.com/store/category/122-62l-2014-2018-2019-classic/ https://www.diablewtune.com/package_deals.html
I've got a great transmission repair guy, who grew up in his Dad's transmission shop. He's solved shifting issues on several of my vehicles without much expense. I would start by working on the source of your issues, if it was my truck.
Shifting issues with those trucks is a known by GM. Their only solution so far is a transmission fluid replacement to another fluid. Both fluids are Mobile One products. Personally, I’m wanting the transmission in my 16 GMC flushed and changed to Amsoil fluid.
Skip the tune via log file guys and find a local or local-ish shop to actually tune it. I used Diablo and a web guy “errybody” loves. It sucks.
For an off the shelf 5 Star with the HP. Both 5 Star and HP have been great with me customer service wise. I made a couple changes to a buddies Camaro earlier in the week. I spent a fair bit of time to learn the software even though it’s pretty simple and user friendly. Just be careful if you do edit files!!!
I put a diablo tuner with a diablew custom tune on my 2015 6.0 6 speed. The difference in the shifting alone was worth it, Throttle response was greatly improved. I suppose there might be a few extra ponies but nothing earth shattering. Side note, my truck has adjustable pedals, and last summer I thought the truck felt a lot less responsive, especially when pulling the RV. I later realized it was because the pedals had somehow got adjusted all the way down to the floor. I still feel like the pedal position affects the throttle response, like somehow the linkage ratio is affected somewhat by the pedal location.
100% agree with this. I’ve noticed the same thing on 4 different GM trucks I’ve owned. Pulling the pedals just a little bit off of all the way back and they seemed more responsive.
After I get my trans fluid changed. I’m looking at the Banks PetalMonster. Anyone have real life experience with one.
Have had diablo with Lew, wasnt earth shattering. I mainly wanted it, to get rid of displacement on demand, v4 to v8, shuffle on gm v8s. All in all... not worth the coin. I have the banks derringer, cai, and pedal monster with i-dash on my 17 D-max... getting rid of the dead pedal, and having 90 extra hp when wanted, is nice. Ski
All good info thanks. Except for @pickled egg, everybody knows the new autos are better than manuals. Shifting is for poor people.
For you late model GM truck 6 speed guys...did you do the TSB on the transmission thermostat yet? It lower the trans oil temp from like ~185 down to ~155. Easy to swap in driveway.