Originally Posted by atm92484
That is 98% of it. The last 2% is that I do not fully understand the logic of the Subaru ECU so I cannot fully appreciate all of the changes that occur when I go from Sport to Sport#. I figure if I am not trying to enjoy the car for that few minute window then there is no reason to make the switch to extra power until things are warmed up.
I'd be curious to know the logic behind forcing the car back to Sport when it gets turned off.
FYI, sport and sport# modes change the boost target maps in the ECU. Sport# has the most aggressive profile. Basically, the throttle acts as a boost controller. The harder you press, the higher the target. This is a 3D map so depending on the RPM and percentage of throttle modulation, it dials in the boost target. If you go 100% around 4000RPMs, you're getting full 13.7psi. The I mode brings couple more things to the table. It turns on shifting adviser (that light that tells you to shift) and it also alters some of the logic as far as when the ECU thinks it's in cruise mode vs. non-cruise mode. There are also provisions in the ECU to change open loop/closed loop delay in I mode only but USDM cars do not use it. It's set the same for all modes. Hope that clears it up for you.