Date: Thu, 12 Sep 2002 21:55:34 +0200 From: "Johan Beikes" <j.beikesnopsamdoo.nl> Subject: Re: FIXED: Violent Vibration at 50-60 MPH
Be careful when adjusting base boost. If you set it too high, the APC has not enough control "window" (i don't know how to put it in another way) to taper the boost to the safe zone, when in overboost. There is a lot of information on the web how to tweak the APC, e.g. www.turboteam.com follow the menu Tech/Enhancements/APC upgrade. Regards, Johan "KeithG" <noonenopsamspring.com> wrote in message news:3D80D7BA.3060201nopsamspring.com... > Paul, > > I'd adjust the base boost to get appropriate boost level. this is > documented on Saabnet as well as a few other places. It requires a > wastegate adjustment. I have yet to check a turbo Saab which was not low > with respect to base boost. > > KeithG > > Paul Halliday wrote: > > Hi again, > > > <snip> > > The APC gauge on the dash indicates that the turbo is boosting to around 3/4 > > up the yellow zone and staying there until about 3500 RPM, where is drops > > slightly. I also feel the "turbo mule kicking me in the back" again, which > > is huge fun. I got a lot of quick tail-off before which was disappointing. > > > > So, I think I know what the problem was :) > > > >
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