Mapped Cars & Ambient Air Sensor

[modonnell]

Is there any reason on a Mapped Clio 172 why the Ambient air sensor need to be unattached?

Car was failing MOT on emissions, and the mechanic said the Ambient air sensor was unplugged. Plugging it back in caused it to run very rich and fail the emissions test even worse.

Mat.

 

[sideways danny]

remapped standard ECU or standalone? Re-mapped standard would use the sensor, standalone would normally use its own air temp sensor instead

 

[RSTuning]

Putting it back should have made it better, the temp sensor defaults to -40 when unplugged, that advances ignition and throws lots of fuel in!

 

[gtruk]

running an omex or the likes?