Hi, I'm just under 27k miles now. APR STAGE 2 Tuned at 500 miles. Trans has had no issues. I leave it in Drive 99% of the time now. Lots of daily driving and highway cruising. So I use occasionally "S" when I'm in the mood and need the revs to stay up because Drive has a tendency to lug the engine when I'm accelerating modularly then rather stomping the pedal.. Also if there are lots of inclines S works best. When I do actually get a rare chance to get out to the mountains for some mild spirited driving. I leave it on Manual and just shift using the steering pedals.
Even when I'm in Drive and bang the pedal down to accelerate hard at anything below 20 mph dry. It just spins a second and the TC light flashes. So I need better tires to solve this I'm on oem tires still.
Does your trans slip a lot?