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MN C5
April 4th, 2006, 02:50 PM
What exactly C6302 does? (MAP Sensor Offset) how does this work with C6301?
turboberserker
April 5th, 2006, 04:21 AM
Check out this thread, D:

http://efiforum.iqd.co.nz/showthread.php?t=667

I think Blacky addresses your question in posts 2-7.

My take is that it doesn't really do anything :P
MN C5
April 5th, 2006, 06:59 AM
Thanks... a offset factor of 10 just moves scale from 0-100kpa up to 10-110kpa.
turboberserker
April 5th, 2006, 07:06 AM
Yep -- which leads me to believe that the 0-100kpa map sensor from GM is actually a 10-110kpa. I think it is in the OS so that you can match the MAP sensor's physical behavior to the PCMs expectations (so if you decided to use a different MAP that was physically reading 0-210kpa, you'd set the offset to 0).
GMPX
April 6th, 2006, 12:03 AM
Yep -- which leads me to believe that the 0-100kpa map sensor from GM is actually a 10-110kpa. I think it is in the OS so that you can match the MAP sensor's physical behavior to the PCMs expectations (so if you decided to use a different MAP that was physically reading 0-210kpa, you'd set the offset to 0).

No point 'wasting' 10kPa from 0 - 10.
Most of the maps will cap it to a minimum of 10kPa anyway.

Cheers,
Ross