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Originally Posted by turbolarry
Technically; high timing plus high boost levels equals a greater chance of serious damage. Keep watching what's going on with the timing while your subtracting fuel or adding boost. If your just starting to knock, it will get flat. If it get's worse, the ECU will pull the timing. That knock sensor and ECU are looking out for you too.
I think the second log looks OK with good advance after 4500 RPM's. What's your boost at readline?
When the boost controller goes on, just keep things balanced and make the ECU happy. 
If your happy with the power at .93 volts, but want to take out a little more, shoot for a straight .92 volts.
How come there's spot's with no reading? |
But is 23 too high? Do I have to induce knock at the higher rpms to keep it from advancing too far? I'd have to add fuel in the high rpms to induce knock to keep the timing from advancing as much, and that will rob power, but if 23 is ok, then I can stay where I am. I really wanted the timing curve to climb like it does but end up at 20. I'm just not sure how to keep it from advancing so aggressively during the 6-7k range without DETUNING it. I even have room to squeeze out more power by tuning those ranges down to .91v, but I'm afraid it will give me even more timing.
Yeah the boost was consistently spiking to 1.4 bar then falling to 1.2 or so. This tells me that the stock gauge is reading perfectly (if not, then my factory boost isn't right). Because of this, I'm very eager to see how much I can gain with a Hallman set at 21psi that doesn't taper...or at least that doesn't go below 1.4 bar. That, combined with the fine tuning of the S-AFC in addition to the MBC, is how I hope to get a 12.4.
As for the blank spots, I'm not sure. I was recording the readings, and somehow there were no intermediate readings in those 2 spots, whereas in the first run, there were readings. Since the logger reads based on certain time increments, I guess it's possible I was accelerating faster through that rpm range. In basically the same rpm range, I went from 11 readings to 9...hmm.
