I was at FL 270 and I used the ITT to set power. I just picked a low 700's number around 710 - 725 or so. We had a huge tailwind and it was my first time stretching the legs in this airplane so I didn't see much of a downside in a slightly lower true airspeed. If I remember correctly we were truing out at about 258 and the fuel flow was about 46 gal per hour. We had a 50 knot tailwind which always helps