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Join Date: Sep 2011
Location: Bohemia
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Quote:
Originally Posted by AndrewCologne View Post
"If" your ECU runs flawlessly, keep using it as you won't loose any performance.

Here you can see the correct setup:
https://nineelevenheaven.wordpress.com/the-911-sc-3-0-engine-with-catalyst-and-lambda-control/
Just get an universal BOSCH heated lambda narrowband sensor 0 258 986 502.
the two white wires will be connected to GND and switched 12v (best would be using a relay driven by the same 12v as the WUR, as then the sensor heater only gets power if engine is running.
The black wire will be connected to the wire of the OX-Sensor plug (crimped, not soldered).
So Andrew ,you are saying by unpluging the Oxy sensor you lose performance? Somehow i do not think so.Many 911 SC run without the oxy sensor and they do run perfect.With the oxy sensor you are looseing power,it was mainly designed for smog inspections in certain states...
Ivan

Ivan
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1985 911 with original 502 191 miles...808 198 km
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Old 09-24-2025, 08:44 AM
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