Vince P Posted March 24, 2004 Report Share Posted March 24, 2004 Subject: PCM input data -What does it mean? I looked at the PCM input data to see what Octane gasoline that the computer was programed for. I recently changed to Regular 87 octane gas. The is no detectable pinging. In input Data is for octane is - PD42 - The possible valued are 0, 87, 90 & 93. The reading on my car is "0" DOSE ANYONE HAVE ANY IDEA WHAT "0" MEANS? 87, 90, 93 is totally understandable. Vince P 1994 SLS 148,000 miles Link to comment Share on other sites More sharing options...
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