Tried this setup today, about 74 deg, light winds, somewhat humid.
Set my length to 29" from 27. ES pipe, AGM header, GT33, Falcon 20x10 carbon, 90 octane.
Upper RPMs dropped to 71-7200 from 75-7600, set mid throttle stick to a little over 5K, will idle reliably at 1600. Worked on throttle curve and came out fairly linear (photo). Throttle response is excellent over the entire range.
Bumped up the idle to 18-1900 as downlines were to slow. At 10lbs 11oz vertical pull was excellent. It still has the increased torque, just not the high rpms. Could pull any size radius over the top.
Only complaint was the sound wasn't as pleasing as a cannister, other than that this setup blows away any cannister setup I've tried. It actually feels like a cannister setup while flying. Downline breaking is phenomenal. Didn't miss a beat over 8 flights, that's 1.5 hours of airtime. Will have to see how it does on a hot, windy day. I'm pretty happy right now.