Even at 18k ft, that's only 10k ft of normalization for cruise power, or 5psi (roughly).  I really wish I knew how much boost the 9.7 rotors would tolerate.  If 6 psi is safe, then I'd be tempted to just set the relief valve there, and try to adjust the throttle for 5 psi.  I suspect this will still be with a fully open wastegate.  Did I mention that I can't wait to actually try some of this stuff :-)Rusty

I cant wait for you to try some of this stuff as well.  I especially can’t wait until I try it.  J   No one seems to discussed the stock waste-gate controller.  This is what I plan to use.  Should be more hands off and still produce good boost with some safety against boost creep.  I also have a greddy pop-off valve but haven’t decided if it is needed.  I may not install it.

I have the 9.0 rotors and a well-fed intercooler so I plan to run a little higher boost if I want to.  I also have an IFR panel so I could climb above 18k every once and a while.  Would I need to?  – almost never.  But no one has mentioned one of the big pluses of the turbo… bragging rights  J  What would 36 in. MAP at 21K get us in terms of TAS?  Of course – 30 min of endurance is not that great but you only need to gather the numbers once to enjoy bragging rights for a lifetime J 

So- how’s that LAEV prop coming, or am I going to have to cough-up the green for an MT?

 David Leonard

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