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fredmeister fredmeister is offline
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Join Date: Oct 2002
Location: Baltimore, MD, USA
Posts: 2,235
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Thanks Jacob.
The top chart is an average of all 4 runs? Your AF ratio were in the mid 11's to low 12's, that is pretty good.
I noticed the bottom chart some of your AF ratio dipped into the 9's! Is this chart a bad run or something or was there some sort of bad calibration on your O2 sensor?
Just trying to get more detail info from your charts.


I do have SC cams and larger 36mm ports as well, so my airflow should be pretty close to yours at the same boost levels, dont know if I mentioned that in my earlier engine mod description.
I would be amazed if my stock WUR without any modifications which I am running is getting me to the low 11's under 0.7bar boost like I am seeing.
I checked control pressures and they are all within OEM spec for my engine.
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.7bar max
---"When you're racing it's life! Anything else either before or after, is just waiting"
Old 07-25-2011, 10:34 AM
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