Making an ignition table more conservative - need feedback
#1
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I recently replaced my motor after a lubrication-related catastrophic failure of my last motor. The last motor was tuned at DIYAutoTune after installing a Megasquirt PNP V2.
I'm doing a track day this weekend and won't have time to get to the dyno between now and then, so I'm looking to make my ignition table more conservative to give a little bit of cushion.
The three tables below show 1) the original dyno tune, 2) my proposed changes, and 3) the difference between the two. I scaled back the timing in the boosted rows (the 100+ rows) since I figured that's where there was potential for knock.
Any critique or feedback on the approach?
![](https://www.miataturbo.net/attachments/megasquirt-18/104281-making-ignition-table-more-conservative-need-feedback-diy%252520ignition%252520table.jpg?dateline=1393257817)
![](https://www.miataturbo.net/attachments/megasquirt-18/104282-making-ignition-table-more-conservative-need-feedback-revised%252520ignition%252520table.jpg?dateline=1393257817)
I'm doing a track day this weekend and won't have time to get to the dyno between now and then, so I'm looking to make my ignition table more conservative to give a little bit of cushion.
The three tables below show 1) the original dyno tune, 2) my proposed changes, and 3) the difference between the two. I scaled back the timing in the boosted rows (the 100+ rows) since I figured that's where there was potential for knock.
Any critique or feedback on the approach?
![](https://www.miataturbo.net/attachments/megasquirt-18/104281-making-ignition-table-more-conservative-need-feedback-diy%252520ignition%252520table.jpg?dateline=1393257817)
![](https://www.miataturbo.net/attachments/megasquirt-18/104282-making-ignition-table-more-conservative-need-feedback-revised%252520ignition%252520table.jpg?dateline=1393257817)
![](https://www.miataturbo.net/attachments/megasquirt-18/104283-making-ignition-table-more-conservative-need-feedback-difference%252520-%252520ignition%252520table.jpg?dateline=1393257817)
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IIRC the maximum timing I was able to pull on a 1.6L using the best pump gas available and some octane booster was something like 24* at 160kPa. Now 33* is full-det area, unless of course the base was not calibrated.
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