Quote:
Originally Posted by oil pan 4
If the engine uses mass air flow to regulate the air and fuel going into the engine it's more likely to actively use the knock sensor.
I think the easiest way to tell would be to use a live obd2 monitor rig get an idea of what the timing looks like. If it only ever goes to around 40 degrees or so it probably runs a fixed timing table. If it goes over 50 it's probably using the knock sensor.
Then to confirm put a few gallons of premium gas from empty in it and it should run even more advance.
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Thanks. Mine doesn't have a MAF sensor, and the timing advance doesn't seem to go much past 30 degrees. Using premium fuel doesn't seem to change the timing advance significantly, but it moves around so much that it's hard to say for sure. For some weird reason the timing always runs at around -8 degrees at idle, not sure why. But it has always done that, both with the stock ECU and with the JDM Honda Stream ECU that I am using now, so I guess it's normal.