lamba sensors

[shinner_vtr]

going to order the piper 4-1 manifold from cam racing, it looks as though there are two lamba sensor holes from what i can see. if i am right and there are two holes do i jus put my two lambas into them. i always thought the second one was for sensing clean air as it is located after the cat. can any help please ?

[Liam_]

I'm 99% sure the manifold you get will have one lambda hole (which is all you need) where the 4 branches merge into one at the bottom. You'll need to unwrap the wiring loom where the green lambda sensor connects (up near the airbox originally), then drop it down behind the gearbox so it can reach the sensor.

If you want the engine management light to stay off, the second lambda needs sleeved and cable tied out the way. If you can live with the light, just disconnect the second (blue) lambda - makes no difference to the way the car runs.

[EazyDayz]

You sure it makes no difference to how it runs ??
i fitted my raceland and as there is only one hole i put in the top sensor and the bottem one is slevved and the light is still on ?
i think it runs richer which meens wasted fuel ??

any help ??

[Liam_]

The second lambda makes no difference mate - I've ran with/ without it and the car acts exactly the same. You sure you haven't mixed them up or damaged the first sensor getting it out the manifold?