Shawneboy Posted December 10, 2021 Report Share Posted December 10, 2021 Hello, Still trying to tune my motor. I found an O2 sensor in my garage left over from the 3.2 porsche motor that blew up. It's a 3 wire bosch's. How am I supposed to connect this thing? How do I know if my G4x is one of the units with an internal sensor? Sometimes I get a lambda reading and sometimes I don't? Help! Quote Link to comment Share on other sites More sharing options...
Link2ThePast Posted December 10, 2021 Report Share Posted December 10, 2021 https://linkecu.com/products/ecu-comparison-chart/ You can use that chart to see what features your ecu has. I think you are talking about the internal wideband o2 controller, there is no internal sensor. Anyway if it is the controller you are talking about I think the internal and external ones are only compatible with Bosch LSU49 5pin sensors. Idk how you're getting it to even read anything... Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 10, 2021 Report Share Posted December 10, 2021 A 3 wire sensor is a narrowband sensor. It is not suitable for tuning, it cant give any indication of lambda - it can only tell the ecu if the mixture is richer than stoich or leaner than stoich. Quote Link to comment Share on other sites More sharing options...
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