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Originally Posted by Ocala FR-S
I've not found any official documentation regarding the sport mode providing quicker shifts, much less why. I wish it was documented as the A/T seems to be much more complex than has ever been explained by the manufacturer. I'll guess I'll spend some time trying to discern how shift quickness differs depending on mode.
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Yeah, I really wish there was more documentation as well. I have found several reviews online that mention these things, but little from Toyota or Subaru.
I did find some Toyota Australia and New Zealand sites that mention Sport mode effecting the "throttle response" and shift times (and even claiming a 0.2 sec shift time in Sport mode, making it the fastest slushbox in the world!). In addition, they also mention that sport mode effects the locking of the torque converter.
I have also found descriptions of the snow mode from official sources mentioning the throttle input being slowed down to prevent slippage, in addition to locking out 1st gear (but not mentioning how sport mode effects throttle-by-wire).
Another interesting note about the subject I found in the BRZ owner's manual. It warns that selecting sport mode while already in manual mode does not actually give you sport mode features, despite the sport mode light on the dash. You need to select sport mode with the shifter in D, and then go into M. Likewise, turning on cruise control disables sport mode, and sport mode cannot be enabled while cruise control is on. This little tidbit seems like it could certainly be adding to the confusion.