I just installed the upgrades for the Hypertech tuner 52001. I had installed the previous tune and it made a small difference in the performance. I just installed the new upgrades which include throttle response, TPMS defeat, 4 different user selectable tunes that can be downloaded quickly, and on-the-fly ability to change the fan, idle, traction control, sway bar disconnect, and diff locker control (Rubicons) . I drove aroound and noticed a definite change in throttle response and my TPMS idiot light was not on. The speedometer is only off by 2 miles (per my GPS) and I can live with that. Once I change my gears I can quickly adjust the tune. The only mildly confusing part is setting the throttle sensitivity. It allows you to change the sensitivity from -50% to +50%. This is speed dependent from 0-10, 10-40, and 40+. I assume the negative values correspond to less sensitivity, and the positive to increased sensitivity, but it wasn't really conveyed. Overall, I am very pleased so far, and soon as I figure out the sensitivity percentages, I will make my throttle as sensitive as I can to reduce the lag of the drive-by-wire system. Hope this helps

 

tpms defeat? I cant shut mine off completely. I have the new updates

 

It's under one of the other menus. It gives you the option to turn it on/off. The menu you used lets you turn it down to 2psi. That menu can be accessed on the fly if you have the tuner plugged in while driving

 

I discovered there have been software updates in the 3 weeks since I last updated my programmer. I downloaded the latest software and BAM, no more tire pressure light! Thanks for the tip