Manifolds, Decats and all things Lamba
Heres a senario for people....
If you have an aftermarket tubular manifold fitted that doesnt have a hole for a lamba to be fitted so it is left unplugged. Then added to this theres a decat fitted with a lamba post cat. Guess it would over fueling massively but would fitting a MIL kit to either or both sensors help to retify the signals to the ecu? Basically would a MIL kit work if fit to the precat sensor? |
No, you must have an pre cat sensor... You need a lamda boss put in the manifold pipe or anywhere pre cat.
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The pre cat sensor is essential for getting the fueling right, the post cat sensor is just a monster to check the cat is doing it's job, it does this by simply comparing the two. It should see a difference, hence why when you decay, it sees the same, and thinks the cat is no longer working, hence the light comes on.
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Yer thats what I thought, guess its a case of drilling the manifold.
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Could try extending the sensor wire from the precat one and fit it in the post cat sensor hole, may work a bit better than what its doing at the moment but i'd imagine it'd be a little slow being so far down stream
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