vtr 421 manifold

[m44rcus]

Vtr 2003 fitted 421 manifold lambda sensor half way down then cat in middle then 2nd lambda sensor then to back box but emission should be 0.3 but running 069 running rich any1 any ideas

[Mickswan]

Since you've removed the CAT you need to sleeve the post cat sensor and put it behind your headlight.

[m44rcus]

Since you've removed the CAT you need to sleeve the post cat sensor and put it behind your headlight.

Hi I haven't removed the cat its in middle of the car

[Milney8989]

Decat pipe to remove . Or put on a full system. Then sleeve 2nd lambda sleeve! Job done