timing calibration question
03-01-2009, 01:15 PM
#1
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timing calibration question
So I tried to calibrate my timing via megatune. I go under spark settings, and change the timing from -10 to 10. Then I check the timing with my light. I get it to read -10 from adjusting the trigger angle. Then I change the 10 to a -10. My timing at idle reads 10 degrees on the balancer via timing light (physical). According to my map it should be different. What am I doing wrong?currentmsq.msq
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03-02-2009, 07:50 AM
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s go up, the timing should advance...which it does. It just doesn't seem to match. Unless I am not understanding something? The car seems to run ok, but I just want to make sure everything is calibrated properly...
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03-02-2009, 08:22 AM
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all i ever do is change all the idle bins on the spark map to the same amount (10* is easiest). hit it with the timing light, and either turn the CAS or adjust the trigger offset until it matches.
trigger offset should be roughly 70*, for the fwd BP anyway. i'd imagine the miata is the same, but take that number with a grain of salt.
trigger offset should be roughly 70*, for the fwd BP anyway. i'd imagine the miata is the same, but take that number with a grain of salt.
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03-02-2009, 08:55 AM
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Then you didn't do the "Fixed Angle" setting correctly. Try it again. Set "Fixed Angle" to "10", then BURN to ECU, then re-check the timing. Adjust trigger angle, then set fixed to "-10" and BURN again. Then re-check.
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03-02-2009, 03:57 PM
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So I'm not sure what I was doing wrong, but I redid it today and got it to read 10* on the pulley, and then I set the 10 back to -10, and reburned. I checked it again and it was idling at 17* like it should according to the spark table. I must've not clicked reburn the last time or something. Just letting you know it's good now, and thanks for helping for correct my simple settings that I may have overlooked.
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