Art, you are correct. The real BSFC
of the TSIO 550 is very close to 0.4 lb / HP*hr or 15 hp*hr/gal
Craig Berland
Robert, all the numbers I have seen for a TSIO-550E with
8.5/1 is
14.9hp/gal
FF where did the 13.73hp/gal FF come from?
not
from George I would guess.