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kenikh kenikh is offline
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Join Date: Feb 2005
Location: North of Exit 17
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Originally Posted by TurboKraft View Post
Flat 12.0:1 on 91-octane.
Flat 11.8:1 on 100-octane. Could have gone leaner, but there's some concerns about the quality and variety of his "race gas" so a little conservative on the fuel, and aggressive on the knock control (pulls a ton of timing and reduces boost).

AEM programmable engine management -- injection + ignition + boost + Lambda + knock. So really, AFR is whatever I want it to be.

In this case we modified the existing 964 DME harness, which was fortunately in really good condition, and ran a dozen or so additional wires for additional functions. But given the condition of most electrical harnesses after 16-21 years, and the number of hours it took to convert the stock harness, it is usually better to build a whole new engine harness.
Don't forget that Australia uses the RON octane rating, versus the US which uses the (RON/MON)/2 calc. Their 98 octane is dead on for US 92/93 octane

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 05-17-2010, 04:05 PM
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