Here is a temporary improvement for the VR config, we will be integrating this + more in the 1.0.1 update.
Engine start, again, the main thing is to not flood the engine, the IO-550 is very (very very very) sensitive to flooding which makes it very difficult to start. Give it a second or two (3 max) of priming, then throttle to 1/4 inch, fuel pump to boost, mixture rich, and it starts like a charm (nearly) every time.
SR22_vrconfig.txt
SR22TN_vrconfig.txt