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Re: Safe boost

I use a ''79 Saab turbo pressure switch it is adjustable I have mine set at
15psig.  It is located near the firewall/master cylinder (on the Saab).  The
later Saabs,'81...'84, use a no-nc switch located under the dash behind the
instrument cluster.  I also use a pressure regulator on the wastegate and
another to adjust the advance of the ECU by limiting the pressure signal to
the ECU.  The pressure switch is used to open a solenoid valve that pipes the
signal directly to the ECU, bypassing the pressure regulator.  I can adjust
my boost and advance according to the gas used.  Regular gas yields a safe
10psig boost.

All the best,