ChristianR

iTrader: (1)

My WRX STI Version IV Type-R Coupe has 2 lambda sensors, does anyone know if other imprezas have them also? and what do I do, as my hks hiper does not have a hole for it....

Bob Rawle

Your car only has one lambda sesnor that fits at the top of your downpipe just behind the turbo, the other sensor is a thermal switch designed to work with the factory ecu and indicate if the cat has overheated. If your downpipe does not have the position for it then just unplug it from the engine bay (follow the cable back). It will not cause any problem if its removed.

Bob