SUPERCHIPS FLASHPAQ F5 IN-CAB TUNER,COMPATIBLE WITH 1999-2016 GM GASOLINE & DIESEL ENGINE TRUCKS

Increased mileage. Will pay for itself within a couple years

Very easy to use. Flashed my 8.1 Vortec in my 03 2500 Yukon. I always run premium because I mostly tow with it so I put the 91 Octane Performance Tune on it right out of the box and I noticed a little quicker sweep through first and second and noticably crisper shifts. There's still adjustability left to further firm the shifts, which I'll play with till I like it.I haven't tried the towing tune yet to comment on that.Very cleanly executed, easy to use and effective product. I'd pay full price for it again for a different platform if I ever change trucks.10/27/21 updateIve been using this a lot longer now and am even happier. Ive found the shift pressures that Im happy with and I have the ability to reenable the Upshift Torque Management setting when I flash to tow mode. Ive used all the modes and while I didnt notice a significant difference in the fuel milage setting, I do notice performance mode and towing mode. I dont expect fuel milage improvements owning an 8.1.I would like the option of being able to used dial in up to +4 or +5 degrees of timing to fine tune performance mode: but Im pleased with this as a its a daily driver and a tow vehicle.I'd still buy one again.

I bought this to help with fuel economy during the $7/gal diesel fiasco.. I went from 14 mpg to 19 mpg immediately. It basically paid for itself within the first 8 weeks of owning, I burn a ton of diesel. My truck gained big power although, I don't beat on my truck. Towing 10k lbs daily, like it's nothing. I put it in the performance tune for non towing days and I've seen 21 mpg after 6 hours of highway driving. Absolutely zero issues so far, 2 years running. Great investment!! I will say that if your trans has a ton of miles on it, DO NOT floor it on the highway. You will limp the trans in 5th. If that happens, clear the code to reset the system. Then just don't floor it on the highway. Or, smarter option, tune it down a level if you can't manage the urge to floor it lol

Easy install, worked great for towing , convenient to switch back from economy and towing to give power when I needed it, Easy to read codes and resetting

Wish it was cheaperJust received this 09/26/2023 for my 2007 suburban and mileage increased 8-10 mpg with performance tuner, 87 octane tune, and mileage savex2 tune. I would recommend for anyone with 5.3 vortec or 6.0. Fast shifting and accelerates without using so much fuel to go

easy to install

Had a tune file stuck in my truck 2005 duramax and it wouldn't let me use the programer. Called the tech line told them what was going on and that I was told to take it to a dealership to get the ecm flashed and they said they would write me a tune to over ride the issues. I will be using them again since they was upfront and honest about things and it saved me money as well.

Easy to use to tune your engine or change shift points