Originally Posted by kamek
For rev-match downshifting pre-tune, I used to have to press the gas, wait a half second for the delay to pass, then do my downshift to give my car time to make it up to the appropriate RPM. Post-tune, I can now just blip my throttle and downshift without worrying about a delay.
That's exactly what I was curious about too. The delay really kills heel and toe. So it fixes the most annoying and un-sporty thing about my car. Power gain or not, that is great.