Quote:
Originally Posted by blue62
Yes the DME uses the signal from the O2 sensor to adjust air/fuel mixture.
But it does that to regulate the temperature of the catalytic converters.
O2 sensors and fuel trims are about catalytic converter performance.
Not engine performance or power.
If this is a race car I assume you removed the Catalytic converters.
If you did remove the catalytic converters then your O2 sensors are serving no purpose.
Open loop fuel maps will work just as well or possibly better for power.
14.7-1 is the best ratio for lower emissions.
Not the best ratio for power.
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Interesting, and good to know.
i do still have racing cat converters, as they are stipulated in the regulations. But I am focused on performance of the engine and not the converters. So you are saying that I do not need to worry about the adaptation of the fuel mixture by the dme?
I thought the pre-cat o2 sensors were to manage fuel mixture and the post-cat o2 sensors were for emissions?
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