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Old 10-02-2012, 08:43 AM   #102
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Joined: Sep 2010
Location: The Ether East of the Hudson
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Good stuff. These Spark-Advance/TPS/RPM graphs really get inside the brain of the Motronic.

Originally Posted by roger 04 rt View Post
...Unlike fueling which can be modified externally, spark advance is under the control of the Motronic's internal program so can't be modified without an ECU chip replacement...
If this is true, would it make the GS's different coding plug irrelevant?
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