93 Octane gas in Phoenix WTF?!?!?!
01-10-2007, 12:17 PM
#21
http://en.wikipedia.org/wiki/Engine_knocking
Air intake charge temp effects detonation/knock - so hotter temps will result in a higher likelyhood of detonation.
Fortunately the S2000 has a very sensitive set of ping sensors, intake air temp sensors and a very advanced ECU that can pull timing and increase the fuel (richer A/F) quickly to prevent knock/ping and subsequent engine damage.
You may notice that the car runs much stronger when it is cooler outside, even more so when you just fire it up. This is a combination of the cooler air being more dense and the intake air temp being lower.
Air intake charge temp effects detonation/knock - so hotter temps will result in a higher likelyhood of detonation.
Fortunately the S2000 has a very sensitive set of ping sensors, intake air temp sensors and a very advanced ECU that can pull timing and increase the fuel (richer A/F) quickly to prevent knock/ping and subsequent engine damage.
You may notice that the car runs much stronger when it is cooler outside, even more so when you just fire it up. This is a combination of the cooler air being more dense and the intake air temp being lower.
01-10-2007, 03:02 PM
#23
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Scratch the AZGAS idea if anybody was thinking about it. It turns out the 100LL (low lead) is still twice the amount of lead than a "leaded" automotive gasoline. It will coat your O2's rendering them useless and plug up your CAT (if you have one 
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