they're set to read lambda at 0.454v
I completely agree with this statement. Maybe we are using different terminology for the same thing.

Was the signal stable over the serial output or was the modulation only present on the analog output?
i didn`t compare it with the gauge serial datastream. I guess there will be no variation on the serial output. It Affects only the 0-5 output.

Which reminds for a past eehack addition request.

Steveo, can you add a wideband stream through a second serial port. Most of the wideband gauges have a serial output. That way we eliminate all the havock related with setting accurate reading through a 0-5v input.


Quick question while I'm thinking about it - is it safe to use steveo's version with the v4 patches?

The v4 patch is backwards compatible with all previous version of eehack. The stock mode4 message structure is intact. I added new stuff to some unused bits and extended the message on request. So is it pretty safe to use and all controls will work as expected.