I'm hearing from Leon that the ignition timing in general, and specifically the timing split between leading and trailing is CRITICAL to turbo installations.  I "think" Tracy is retarding the ignition with boost, but I don't know how much. 

 

The aftermarket computer that I had on my FD allowed you to change anything you wanted wrt timing or fuel.  I didn't mess with the timing much, but recall that the rule was to never have a negative split under boost.  In other words, never have the trailing fire before the leading.  I think the guys who need to worry about exactly what split to run, are also the guys who are making 500+ HP out of a 13B.  

 

I suspect that Tracy's 0 split will be perfectly fine for our needs, assuming the turbo can be kept under control.  I also don't see any better option than the EC-2 for turbo use, in fact, I think it's just dandy.     

 

Cheers,

Rusty (Where would rotary aviation be without Tracy?)