i'm using the v&h 2 into 1 and it tuned great on my 10.75 compression ratio 103" motor. the guy with the dyno, did he tune it for you, or just do a dyno run to see what it was putting out? if it's not been dialed in-tuned properly by someone who's really familiar with harleys, then that's likely the problem with having such low numbers. i must also mention that it's a bit optomistic to expect the 100/111 for that build, in my opinion. the 100/104 is way more than i need, and with proper tuning you should be able to match or beat those numbers by a bit. it depends on a lot.