Transmission Questions

Is it possible to have an automatic transmission shift quicker in Sport mode than normal Drive?

Here's kind of an example, if you listen to how it shifts, it's smooth until he turns on Sport Shift and guns it.

 

I believe some of the ETK and Sunburst transmissions have this feature on the automatic transmissions. They don't shift faster, instead, they hang in the higher RPMs slightly longer before shifting.

 

I was thinking that you could mod it so, but it would need replacing of transmission to work actually, not sure if some custom controller wizardy would allow that.

Then again, I think that such feature would be quite essential in modern automatic cars which have these different modes which change response speed and rev targets, so might be something devs have planned but not yet implemented.