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Last night I turn the sound recorder on the laptop on while I did a tuning run. I played back the data in MegaLogViewer while recording the screen, and then matched it up to the sound. I was hoping I could get suggestions for improving the tune.
The first issue is the hard start. The only time I purposefully turned the engine off was at the very end. It runs pretty smooth, once it is warmed up to about 120*F, but below that the AFR will go off one end of the scale or the other, indicating that fuel isn't getting burned.
http://www.youtube.com/watch?v=F3pYW1lOcTo&feature=youtu.be
The top graph has RPM, manifold pressure and throttle position.
The second graph is injector pulse width time, AFR, and fuel flow.
Spark advance is on the third, along with mapDot and tpsDot. Those are measures of how quickly the map and throttle position are changing. The computer uses them to calculate how much to extra pulswidth to add on acceleration.
The bottom graph show the oil temp, coolant temp and manifold air temp.
Instantaneous values for each line show up at the center bottom of each graph.
The last line at the bottom is a run time timer.
The bouncy balls to the right are the tables that the computer uses to calculate the injector pulse width and spark advance. Lowering the numbers in the VE table tells the computer that the engine isn't sucking as much air as theoretically possible, and the computer will lower the amount of fuel at that combination of RPM and manifold pressure. If the ball is between cells, it uses a weighted average of the adjacent ones. It just pulls the number from the spark advance table and sends it to my EDIS modules.
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