Reef

iTrader: (2)

Whats the sensor in the top of the pipe near the Turbo?
Some say Cat heat sensor some say O2 sensor???

Car is V5 STI.

Thanks

Devious

iTrader: (4)

its your o2 sensor also known as a lambda sensor

scooby72

iTrader: (6)

Hey bud - If youre talking the sensor after the cat its the "cat on fire" sensor. The lambda sensor is under the engine on the exhaust manifold. If you de-catting then just tie the sensor in question out of the way in the engine bay! Same advice given to me when changed the downpipe - ALL GOOD!!

midnight

iTrader: (10)

Top of the downpipepipe on a 1999/V5 sti is the lambada sensor- there is a white plug next to your gearbox dipstick that connects to it,if you do not fit it will lead to engine check light coming on.

scooby72

iTrader: (6)

I believe I Stand corrected on this one! apologies - Mine is pre faclift so the cat sensor is there on mine!