Andy,
I just got back from testing the new Fat Pipe on my 21SGX. I ran two tanks of 60% with my current heat racing setup (CMDI Parabolic long) to get a benchmark. With the Fat Pipe installed at the same length and no adjustment to the needle, I had an increase of four miles an hour (measured with my Stalker). The Boat launched easy and had excellent midrange. The overall power band was superb. Defiantly the best 21 Pipe I have ever used.
Please thank the girls for getting it out to me so quickly.
Will