BSFC Numbers for Rotary

[NoDOHC]

I have been told for years that rotary engine are extremely inefficient. I am curious how efficient they really are. It is easy to call something inefficient when there are no numbers involved. I have some actual numbers from a dyno run which should be reasonably accurate.

I disregard the higher speed power because I think my ignition is inadequate.

Engine: 4-port (mild street port, factory intake manifold, Racing beat headers)
Air Fuel Ratio:13.1:1
Total Ignition Timing: 38 BTDC
Compression Ratio: 8.2:1 (polished s4 turbo rotors)

Power Output: 247 Hp (198 WHp) = 184.3 kW
Engine Speed: 6500 RPM
Torque:200 Lb-Ft (160 WLb-Ft) = 271.8 Nm
Injector on time: 5.4 ms
Injector size: 460 cc/min

This is all the info I need to do the calculation.
Injector Duty cycle: 5.4ms/(60/6500) = 58.5% (good info to have, not necessary for calculations)
Fuel/time: = 460(cc/min)*4(injectors)/60,000 (ms/min) = 30.6667 uL/ms
Fuel/Revolution = 5.4 ms*30.6667uL/ms = 165.6 uL/rev
Fuel Rate (mL/s) = 17.94 mL/sec
Fuel Rate (g/s) = .72 g/mL* 17.94 mL/sec = 12.92 g/s
BSFC (g/kWh) = 12.92/184.3*3600 = 252.4 g/kWh
BSFC (lb/Hp.h) = 0.415 lb/Hp.h

Please bear in mind that this is a worst-case calculation, as the injectors actually have approximately 200 us of delay before turning on.

If you compare these numbers to those of a typical 8.2:1 CR piston engine at 6500 RPM, it would appear that the rotary holds it's own quite well against a piston engine.

Anyway, for those of you running naturally aspirated rotaries, please post the following information for the calculation (just so everyone knows, please feel free to do the math yourself).
Basic engine info (for information only)
Air Fuel Ratio (for information only)
Total ignition advance (for information only)
Power output (In WHp or Hp)
Compression Ratio (for comparison's sake)
Engine speed
Injector on time
Injector size

This should allow us to develop a good data pool for establishing the relative efficiency of a rotary engine.

We will not include input from engines that ran ridiculously rich (anything rich of 12.5:1 AFR) on the dyno in our average, this will artificially skew the numbers to look very inefficient (as it would for a piston engine, but the numbers out there for piston engines assume decent tuning). Total ignition timing must be at least 25 degrees to be included in the average.

Please feel free to post any data that you have, but if it is rich of 12.5:1 AFR or retarded from 25 BTDC it is not added to the average.

BSFC data is found in this spreadsheet