Date: Thu, 9 Sep 2004 22:26:22 +0800 From: "Starman" <mail.spamnospamt.net.au> Subject: Re: Turbo in SAAB 9-5
"Goran Larsson" <hohnospamlid.invalid> wrote in message news:I3s07v.Kvynospamove.se... > In article <413e7dc2$0$22786$5a62ac22nospamqv1-newsreader-01.iinet.net.au>, > Starman <mail.spamnospamt.net.au> wrote: > >> ...Does anyone know how hard and costly it might be to change a turbo in >> a >> 98 9-5SE to the one the Aero comes with? > > It is quite easy, but it will not give you any performance increase > unless the engine management software is changed to take advantage of > the bigger turbo. This can be done by replacing the Trionic 7 computer > with the Trionic 7 computer from an Aero. > >> Is it a matter of simply swapping it out, or do other components need to >> be >> replaced or added? > > The Mitsubishi turbo (Aero) is not completely compatible with the Garret > turbo (non-Aero), so some oil and water pipes have to be changed as well. > >> Also, is there any other way of increasing performance? > > You can get a large performance boost, i.e. from 170hp to 230hp) by > changing the engine management software and keeping the original turbo. > If that increase is not enough then it is time to think about changes > to exhaust system (to get the exhaust temperature down), inlet pipes > so the turbo can get air easier, and a new turbo (e.g. the Aero turbo). > > The original non-Aero turbo has advantages in daily driving as its > smaller size reduces turbo lag (its smaller size makes it spin up > quicker). The Aero turbo has advantages at high rpm as its larger > size can provide more air flow that the non-Aero turbo. This is > significant at top end power. > > -- > G–ran Larsson http://www.nospam.com/saab/ Thanks for the info. I'll try the chip change first and see how that goes. Cheers Craig from Oz
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