> 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 just asked my engine guy (Japtrix) this
question. He feels that the engine (9.7 rotors) will be fully protected with a
6psi popoff valve and the stock wastegate. He seems to think
that manual wastegate control is unnecessary. He once drove an RX7 up a
12,000ft mountain in Peru. As they neared the top
he felt the boost drop off. It came back as they came back down the other side.
John Slade
John, that makes sense as the stock
wastgate control is reference to ambient (i.e. procuces a fixed amount of boost
above ambient - about 5-6 psi). That is why I also think it is an
excellent choice to protect both the turbo and the engine. However,
if you really want to get some power…. J
David Leonard
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