Quote:
Originally Posted by blackrosenova400
The computer has no idea what the base timing is so if the logger says 19-20 with the base timing of 0, what am I really at?
What am I really at when im at when im at a base of 5 degrees BTDC and logger says 20?
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The computer assumes that the ignition timing that it is trying to run actually is happening. It isn't adding or subtracting any base offsets. In actuallity, when you lock the timing at 5 degrees by grounding it and then set it at 5 degrees with the timing light all you are doing is making sure that what the ECU says it is running actually happens. When you lock the timing, then it locks to 5 degrees in the datalogger also and you just make what happens at the motor match the computer. You could take the whole timing map and set it at 10 degrees or whatever and then hold the rpms at 1500 and sync the engine timing to the ecu timing that way also. So with correctly synced timing, if the datalogger says 20 degrees under boost, then thats what should be hopefully happening at the engine.
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