Date: Fri, 01 Mar 2002 15:49:07 GMT From: "Kalle Uhr" <kalle.uhrnopsama.com> Subject: Re: 9-5 2.3L chip tuning
www.saabtuning.com "Goran Larsson" <hohnopsamlid.invalid> skrev i meddelandet news:Gs7pI3.E6Dnopsamove.se... > In article <3C7D4A72.AAA91DD1nopsamanytime.co.uk>, > Johannes H Andersen <johsnopsamanytime.co.uk> wrote: > > > OK, so that's cleared up. The effect of 'chipping' however, must come > > from the mapping more than anything else. > > Yes. But the designer of the ECU software does not usually make it easy > to find the maps, tables, and limits. One of my colleagues was once > involved in a small company doing this kind of work and he has told me > about ECU software (not Saab) that had nice looking fuel maps that were > never used. The real maps were scrambled and hidden inside the code. :-) > Once upon a time I disassembled the Bosch Jetronic ECU software from my > old 9000T '88 and the code and tables were not trivial to understand. > There is a lot of work involved in remapping ECU software if you have > to do it without support from the original manufacturer. > > > Presumably, the software > > is for interpolation of tables. > > Some of it, but in a modern ECU it has lots of other tasks as well. The > T7 also handles cruise control, traction control, OBD II diagnostics, > ignition timing, fuel burn analysis, ESP, ... > > -- > G–ran Larsson hoh AT approve DOT se
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