Wideband Lambda Location in exhaust

[Sprocket]

Where is the best location for the Wideband Lambda to be located. I have heard that they do not like extreme temperatures above the 800c mark. Thats not too much of an issue as the turbo I am using has a max of around that any way and i will be obviously monitoring the situation with the EGT. Will it reac that temp you ask, well possibly, I intend to use ALS on odd occasions for drag days, the boost will be 15 psi at the max with 9:1 cr so the EGT will be high to start.

Just dont want to burn out these little puppies as they aint cheep to start.

Location options - befor the turbo, imediately after the turbo or in the down pipe some what after the turbo?

[rob@vems.co.uk]

The lambda is best after the turbo somewhere in the downpipe that allows the sensor to sit as close to verticle as possible.

[BUTRE]

The lambda is best after the turbo somewhere in the downpipe that allows the sensor to sit as close to verticle as possible.

Verticle as possible... why?

[Sprocket]

Well, if i stick it in the down pipe, it will have to be horizontal, though it will be in a vertical length of exhaust.


I think the 'as vertical as possible' it to prevent water gathering in the sensor tip???

[rob@vems.co.uk]

Correct, its to stop water issues.

[cliffb75]

Bosch specify vertical +- 80 degrees to stop water collection. Most installations try to be more like 45 degrees minimum. Completely horizontal is a bad idea.

[BUTRE]

horizontal and vertical to what? the floor or the exhaust pipe where the lambda is bolted to ?

[rob@vems.co.uk]

the floor.

[Tony C]

i mounted mine with the nose pointing down slightly, due to the above answer regarding water.

[damo_S13]

i have fitted mine at the bottom of the down pipe. and its at about a 30-40deg angle

damo