Chris,
Your information well illustrates one of the advantages of EFI and that is the ability to run very close to the fuel stochiometric limit and get max power. For us that are running "sprinkler" injection (read mechanical) we have to be much more conservative on where we set or air/fuel ratio. My friends that run gas typically run in the 12.3 to 12.6 area simply to ensure that the tops of the pistons don't go out the exhaust. On our little 1 liter Kawaski that we run on methanol we try for 6.0 and the stochiometric is 6.8. We have also found out that we don't find any power in a lot of advance as we run 30 degrees and don't see any reason (more power) to run more. Although we do have a 6 speed tranny the step from 5th to 6th is a little bit more than we would like to have and our plan is to make the 5 to 6 shift in the 12,800 to 13,000 rpm range. Our max power is in the 12,000 to 12,500 area.
Several years ago the J gas streamliner of Brant and Speranza came out with a new and better body, they were running a 660 cc Honda, so they were giving away 90 cc to the J class limit, any way they made several runs and were faster than their old body but still not a record breaker, suddenly they are running 218 and 220 speeds much faster than the record. I went over to see what they had done and it was all in the gearing. They changed the gear to allow the engine to rev to the 15,000 to 16,000 rpm range! but that was where it made its best horse power and they set a very impressive new record. It is horse power that makes you go fast not torque.
Rex