Does anyone know if the Gems ecu makes use of the lambda sensor? I am asking on behalf of a friend who has bought a Group N exhaust system for a car that is being built and the downpipe does not have the hole for the sensor.

 

The downpipe needs a Lambda boss as a wideband sensor will be used when mapping. GEMS usually run open loop so the sensor would be redundant for everyday use.

 

Cheers