Quote:
Originally Posted by rjacob
How si the IGN display used? It sort seems to move relative to the LOD display.
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The ign display shows the total ignition timing currently used. When running at it's most efficient levels or at very high RPM the timing tends to be more advanced.
I've notice when my Insight 5 speed is in "lean burn" mode the timing is anywhere from 26-30 degrees BTC. If I pop out of lean burn, the timing retards. This makes sense as a leaner, more efficient mixture combusts more slowly and needs more advanced timing to thoroughly burn.