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Old 03-09-2009, 05:34 PM   #1
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Default Tuning comments, what can I improve

I've searched through the threads and found multiple timing maps and fuel maps, but I am hesitant to through an unknown map on my car when my knowledge is still limited. I'm hoping everyone one can look at my datalog, fuel map , and timing map. The give me a little advice on how it looks and what could/should be changed. I'm concerned about the A/F ratio of 22.19 flat across the top of the graph. Thanks

The .rar file is the .map datalog
Attached Files
File Type: rar formiataturbo.rar (621 Bytes, 30 views)
File Type: pdf zone data.pdf (121.9 KB, 88 views)
File Type: pdf ignition.pdf (133.5 KB, 82 views)
File Type: pdf fuel curve.pdf (124.6 KB, 74 views)
File Type: pdf datalog.pdf (190.1 KB, 82 views)
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Old 03-13-2009, 06:40 PM   #2
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Default a couple of issues, that I need help with

I found out the the A/F problem was a conversion issue. I needed to map my auxCF in order to se the A/F graph. After doing this though I'm having an issue with the readings that i see. At idle it appears to be very rich (between 8 and 9), but throughout the map it will shoot back up to 19.44, then start reading correctly intermittently throughout the map. I'm wondering what is going on? Under boost it will show that the A/f is close to target. Does anyone have an idea as to why the A/F reading would be like this? I have an AEM wideband o2 without gauge. Could the o2 sensor be going bad?

Next question is about idle. I changed my fuel and timing map, and now when I let off the gas the rpm will drop to 300-400rpm. It catches itself just before stalling and then goes up to 800-900 rpm. Does this sound like a timing gradient that is too steep around idle, or a fueling issue. It was perfectly fine before I adjusted the timing and fuel. I did keep the fuel at 0 and 500rpm the same as it was.
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