The 2700 Curve doesn't work right at all in the upper RPM range, it never even quite achieves full throttle opening. I don't think anybody really understands this map completely (probably because there are other related maps that UpRev hasn't decoded yet). I did try several other intermediate values, but the 2300 one came out the most ideal.
Keep in mind my criteria though:
My problem with the stock map is it doesn't allow the car to go full throttle from low RPM. Basically it restricts throttle response until the RPMs get a bit up "out of the hole" and then gradually opens the full throttle as the RPMs rise. This seems to be mostly to keep people who probably shouldn't be driving this car from stomping the pedal from a standstill and spinning out into the guy in the next lane.
The fix for this is to fix the final column of the table so that the low RPMs do the same thing at full pedal that the high RPMs do. However, you then still have to smooth the table back out in some sense, and if you don't do it right you end up with non-linear and/or jerky (and/or flat out buggy) throttle response. My goal in doing that smoothing is
not "open up the the throttle as quickly as possible relative to pedal position". That's what some other people seem to want, and it's what those add-on generic electronic throttle fixups do, e.g.
Why SprintBooster Works .
If I want the throttle open faster, I'll simply apply my foot faster
. Technically a technique like the sprint booster uses probably shaves 20ms or whatever off of the total response time when you stomp the pedal to the floor in a drag race, but it does so at a sacrifice to throttle smoothness in the rest of the range, which is unacceptable to me.
So, to sum it up, I think the 2300 Curve data (at least on my car/ECU) resulted in the best possible results in terms of those goals: Instant full engine throttle when you stomp the pedal down at any RPM (well, assuming no wheelspin + VDC interference, etc), and a linear, smooth pedal response throughout the pedal's range, to provide for maximum nuanced throttle control for real driving (as opposed to some other maps or the sprint booster, which will leave you with fast and slow spots in the pedal range that don't respond linearly to foot input).