Date: Thu, 22 Feb 2001 23:02:31 +0000 From: Johannes H Andersen <johsnopsamsafish.com> Subject: Re: Overboost???
Johannes H Andersen wrote: > > Rob wrote: > > > > I read somewhere that the Viggens motor can produce "overboost" up to 20psi > > for up to 20 seconds !? > > > > Does anyone know anything about this?? > > > > Also how much boost can these new Saab's take ( the Viggen and the Aero) > > safely? > > > > Rob > > I have seen that the 9-5 Aero is programmed to overboost for 20 seconds, > can't remember the exact size of the boost, but it is convenient for > overtaking maneuvers. This is for a manual 9-5. The auto version could > be different or might not have this? > > Johannes Here we are: http://www.autoweb.com.au/start_/showall_on/id_SAA/doc_saa0002011/article.html You have to look far down on the page. "This 2.3-litre Turbo Ecopower engine also has an "overboost" function which raises peak torque of 350 Nm to 370 Nm for up to 20 seconds on Saab 9-5 Aero models with five-speed manual gearbox." I would imagine that the auto box can't take the strain of this function. Johannes
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