ok, how would you stand if you ran LPG and removed the petrol tank? you would have no need for cats, correct?
 
hi im an authorised examiner and mot tester and as of the 1st of january 2012 a car that was originally fitted with a cat at maufacture wether petrol or diesl which vosa do not specify is presented for an mot with the cat missing is a fail so before removing the cat i would ring your local vosa office just in case the other way would be is to remove cat knockout all internals and replace then it loock like cat still there but with no restrictions
i stand corrected checked paperwork this morning and it only applies to a full cat test ie petrols
 
...and if you can't see with the standard lights at the speed a P38 will go then you shouldn't have a licence:rolleyes:

but DT, yours is a doezil :)



ok, how would you stand if you ran LPG and removed the petrol tank? you would have no need for cats, correct?

you would be fine, as you wouldn't need an MoT since the car wouldn't start. No need for road tax or insurance either :)
 
There is no part of the MOT test at the moment that can determine emissions on a diesel engine, gas particle or otherwise. There is only a smoke density check. The part about "Check for the presence of a catalytic converter if one was fitted as standard". Only appears in the petrol full cat test routine. It is NOT mentioned in the diesel test routine as a reason for refusal. So as far as the MOT is concerned there is no reason to fail a diesel if the cat has been removed. However it is illegal to remove it under construction and use regulations. I think that is the regulation referred to in the DFT answer.
 

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