I recently purchased a 2021 Challenger GT RWD and it came with the STP and Sport buttons and the Performance Pages and Drive Modes on the 8.4 Uconnect screen. I installed the double bypass unit, married my tazer and then went ahead and turned on SRT modes in the Perf Settings. I did the full reboot and two sleep cycles and I thought things were good. I noticed that it didn't add the Eco mode to the drive modes and thought no big deal. I then installed a Pedal Booster and unplugged the negative terminal. When I plugged it back in I noticed right away that my 8.4 Uconnect screen was Chrysler 300 blue and I lost my Performance Pages and Drive Modes on the 8.4 Uconnect screen. I also lost the use of my STP and Sport buttons. That's not good.
Long story short, I unmarried the Tazer, did the full reboot and sleep cycles, then had to disconnect the negative terminal to finally get back my Uconnect red screen, Performance Pages, Drive Modes, and my STP button and Sport buttons. I saw in their manual that owners with a 3.6L and 5.7L would not get all the features.
The question that I've put to Z auto but has yet to be responded to is....Can I get the SRT splash screen on the Uconnect and the SRT fonts on the Evic Display (the font for the speedo is bolder and italic compared to stock) without losing my STP and Sport Buttons and the Performance Pages and Drive Modes?? I'd even settle for just getting the SRT font on the Evic Display. It's not a big ask but I'm guessing since it hasn't been answered, the answer is no...?
I'm surprised for as long as this product has been out that they haven't figured out how to get all the bugs out of it, but yet keep adding more features to it without fixing the features to be a solid for all platforms.