Date: Fri, 08 Aug 2003 17:22:13 +0100 From: Grunff <grunffnopsam.com> Subject: Re: Saab 99 buying advice?
davehinznopsamcop.net wrote: >>Did the later 99 turbos have an APC then? > > > I don't think so, but I can't remember how it modulates boost. (yeah, > wastegate, but how does it manage anything? Does it?) No APC. There's a turbo overpressure switch which cuts the fuel pump when the pressure goes above the preset (10psi). The rotor arm also has a centrifugal RMP limiter. All dead simple. -- Grunff