Date: Wed, 27 Feb 2002 22:08:27 GMT From: hohnopsamlid.invalid (Goran Larsson) Subject: Re: 9-5 2.3L chip tuning
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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