Tytanium

I recently bought a scantool from scantool.net and am currently using the software available on there. I got it today and began using it when I noticed that at idle, it reports my timing advance to be at 16.5 degrees. Under load it jumps from 20 to 40 derees.

Now I'm no expert at this, and this tool is new to me, but isn't stock timing supposed to be 10 degrees advanced? Or is the software screwy?

Is there another way to confirm this reading? I do have a pretty large exhaust leak on both sides upstream of the O2 sensor, and I don't know if that would affect the ECU's timing curve.

cliffyk

The base setting is 10° BTDC, when running it will be adjusted all dynamically based on ECT, load, throtle position, rpm, and a bunch of other factors. Without logging and analyzing those values too the timing numbers don't mean much.

This is all just a more sophistcated and precise way of doing what centrifugal and vacuum advances di on distrubutors...