Date: Thu, 9 Sep 2004 13:31:07 GMT From: hohnospamlid.invalid (Goran Larsson) Subject: Re: Turbo in SAAB 9-5
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/
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