With the IMRC open, your MBT will allow 31-32* of timing, I don't think the borderline values will let you get much more than the low 20's. If the spark makes it to the MBT value you are doing good. Once you have you MAF values correct, you are going to be modifying the borderline table. When the MAF is off it can make the load value lower that it really is and at low RPMs this can be a difference of 10*, putting you at a high risk of detonation. Until you MAF values have your fuel trims with in 2% everywhere, I would put -5 in the global adder, just to make sure its conservative. Gonna put on my cai and do some logging in the morning. right on, just added it all to my scanner. Once you get done with all that the curve should be really well dialed in, and you can start on spark. Then you can go out and choose a gear like 3rd or 4th and do WOT pulls from 2500-4500, then 2500-5000, then 2500-5500, etc. This should get you dialed in further up in the voltage. When you do go for a drive you will want to do the same thing, put it in high gear and give it 20% throttle and hold it there a few seconds, then 30%, then 40%, then 50 %, etc. This should get you enough data to get the lower part of your airflow vs voltage close enough to drive with no issues. The RPMs dont need to be exact, just rev it up a little and hold it as steady as possible. I would suggest start off in part, rev the engine to 1500RPM and hold it for 20 seconds or so, then rev it to 2000 and hold for 20 seconds, then 2500, then 3000, then 3500. You can enable them again once you have done a few logs with very small STFT's. so that the only correction is from the short term fuel trims. You will also want to disable LTFT under fuel> oxygen sensors. Open the file im attaching, and it should populate the graph with what you can paste special % half into your airflow vs voltage table. Right click your graph section, and select graph lay out.
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