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96 A6 Trying to view MAF and RPM together. Whenever...

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Old 05-29-2003, 05:39 PM
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Default 96 A6 Trying to view MAF and RPM together. Whenever...

I start viewing group 019 (the one w/MAF) the RPM reading (in group 003) drops to about a quarter of what it should be and appears to not function correctly. Any hints?
Old 05-30-2003, 04:41 AM
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Default That Hitachi ECU has a bug.

When you try to read more than one measuring block group, which is done cycling through them, it gets confused and sends bogus data.

There's a note about this on our "Issues" page.

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Old 05-30-2003, 04:49 PM
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Thanks Uwe. So much for calculating volumetric efficiency. I could not find "Issues" on the site.
Old 05-30-2003, 04:51 PM
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Anyone know of an upgrade for this ECU? That is unacceptable. Replace ECU?
Old 05-31-2003, 05:48 AM
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Default I seriously doubt it.

Since the factory's VAG/VAS scan tools can't read or display more than one group at a time, Audi doesn't consider this to be a problem.

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Old 05-31-2003, 05:53 AM
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Default Have you tried the SEARCH box at the top of home page? :-)

It's also linked from the FAQ, and from the VAG-COM Product Information page.
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