Works as advertised
Really woke up the 5.3L in my vehicle using the canned tune. I have the Borla catback system as well so turning off the AFM is a plus, and the transmission shift to firm helps as well. Documentation could be better to help explain parameters for vehicles, etc. But overall I'm pleased and would recommend it.
2014 GMC OIL SAVER
I bought the Max 2.0 because other reviews had said their trucks had stopped using oil when the 4cyl program had been turned off. I have run this program now for close to a thousand miles and haven't used any oil with the engine running on 8 cyl all the time. Gas mileage has remained about the same as before, I haven't noticed any problems with the Max 2.0 programmer. My 2014 GMC sierra has a lot more horse power running this programmer .