M555JHE

as above, my MY93 WRX RA has a sensor in the bottom of the downpipe, is it a lamda sensor? the de-cat i have does not accomodate this? i know there is a lamda sensor in the header.

millwrx

iTrader: (1)

think this is a heat/temp sensor if its a small one before the bend on the bottom of the downpipe

ticky

If your car is fitted with the standard catted downpipe, then the sensor at the bottom is the heat/temp sensor or cat on fire sensor.

You don't need this if your going to fit your new decat downpipe. Just unplug it & remove.

O2/Lamba sensor
You can either bung the lamba sensor hole in the new decat & leave the original lamba in place in the exhaust headers, or swap the order around.
Remove the lamba sensor from headers & place into decat dp, then bung the headers.

Ticky

M555JHE

thought i didnt need it, it wasnt on my UK car when i decatted that.
i will bung up the lamda sensor hole. wen i get the turbo bolts undone anyway!