LGTspecB1657615261 Posted May 28, 2010 Share Posted May 28, 2010 This is the result of microSD logging of my daily driving. 30,000 data points after filtering out open loop and other conditions. I have been fine-tuning my MAF in closed loop and its pretty rock solid. Just a couple more iterations to get rid of the RPM-based corrections above 3k RPM. But every once and I while I get a high negative correction. It happens at the lower end and seems to be clustered around 2200 RPM and 2600 RPM. That is about the RPM I end up at after shifting while driving in the city, so I wondered if perhaps the two could be related? I am not sure if my AFR sensor is inaccurately going rich, or if I am actually randomly losing air somewhere. Any thoughts? Again, 30,000 data points here. Check out my trendlines http://img576.imageshack.us/img576/7268/corrvsmafv.jpg http://img12.imageshack.us/img12/1416/corrvsrpm.jpg Link to comment Share on other sites More sharing options...
LGTspecB1657615261 Posted May 28, 2010 Author Share Posted May 28, 2010 bump for some thoughts. Link to comment Share on other sites More sharing options...
LittleBlueGT Posted May 28, 2010 Share Posted May 28, 2010 Do a quick log, and watch AFR or correction in transient situations. Like going from 20% throttle to 0% or vice-versa. Your car is completely fine and normal. Full tune of 68HTA, KSTech 73 MAF, Racer X FMIC and ID1000s................by the DataLog Mafia!!! Link to comment Share on other sites More sharing options...
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