Quote:

When you do a dyno run, the throttle is wide open.
So the spark is at full advance.
If you disconnect the tps, it goes to full advance (default).
Same thing, right?



Well not exactly since the dyno run the operator starts at closed throttle and opens it to get the full range and if default is full advance then you start at full advance instead of the normally retarded starting position then advancing as the engine runs faster. Not sure how much impact the TPS sensor has on that though since throttle position changes as you move through the gears and the advance should change as the engine runs faster not as the throttle opens and closes since the ignition has to keep up with the RPM not the throttle position.

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