2013 shift points fixed with TSB
Like many people here, I've been extremely frustrated with the shift points on my V8 Summit and have been patiently waiting for Diablo to release a tuner so I can manually adjust them. I took my Jeep to the dealer on Monday to have a key replaced/fixed and told them about my disgust for how poor the downshifting is when you jump on the accelerator.
As luck would have it, apparently a TSB was released last week which fixed it, and I can tell you firsthand it feels the way it should have from the beginning now. No more erratic up/downshifts or having to drive in manual mode or tow/haul mode. I'm still hoping the Diablo will help with the low end torque, but I no longer feel ripped off or wanting to switch to an X5.
TSB is 18-027-13