The original was no good, so was taken off, and all was fine, the prroblems arise when water gets into the plug.
If the plug gets wet, I lose all power, and blow huge clouds of black smoke.
How do the sensors work, and what is their purpose? I thought they were only on auto's, or petrols. not diesel manuals

Does it adjust the butterfly in the air intake, and if so, can I simply remove the butterfly?
Cheers,
Dave