It’s really noticeable if you’re in a parking lot or something, especially with speed bumps. Because of the stock throttle map being so lazy, (well described) you get a little slack but when tuned, JHM sets your throttle to be exactly what your pedal is asking for. People think it’s exaggerated but it’s not.
After I got tuned, I mentioned to JHM"s tuner (countvohn) that the pedal felt retardedly hot, so took me out in my car with him logging on vagcom. He would ask me to give it say ‘25% throttle’ or ‘50% throttle’ and hold…and when I would look over at the throttle valve angle (I think) field in vagcom, it was right where my foot was. Just shows you how bad stock is!
The RS4 has a throttle limiter from 0-5250 RPM in gears 1,2 and 3. It is 50% in cold weather. When an RS4 gets tuned you often see the guys boasting of torque gained down low after they dyno 3rd gear. It’s that limiter.