have more GAMI test data if any of you are interested.  I am finding that my cylinders all peak within 0.2-0.4 gph of each other with the stock injectors.  Not too bad I guess, but the engine does start to get a little rough right about peak, so I don't run on the LOP side that much but would like to. 

Engine    Lycoming IO-320-D1B, 160HP, ram air induction           

 

Dan,

 

Interesting numbers.  I am using Airflow Performance .022 injectors with "turbo" shrouds on my I/O 320-B and have a similar .2 gph spread at peak.  The shrouds are supplied air from a small plenum fed by a 3/8" diameter "pitot" tube to provide the same pressurized air to each injector and at least at the same, if not higher pressure than the ram air induction system.  This seems to have helped with the fuel atomization and I have no roughness at peak or lean of peak with EGTS and CHTS reasonably close.  Of course, LOP is of no great interest to me since I prefer to run at max power.

 

BTW, please destroy this message after reading so that it does not fall in the hands of other Lancair naturally aspirated racers. Oh, you know what I mean, other Lancair racers with naturally aspirated engines not the racers themselves.