cats

How do I knwo if my cats are fubar.. I have been told that it's a likely cause of my loss of power and a likely side effect of the overheat and hen poor timing i had when i blew the head gaskets but even a decat pipe is costly if the problem is caused by sommat else.. so how do I test???

3.9 '98 with lpg btw

emissions test set what the co and the lambda reading are but done on petrol

any way wihtout paying someone lol

not really as far as i know

i usually find the smell of rotten eggs a real good indicator, other than that emmisions test should do it

what should the emissions be for a p38 4.0, what would they be on lpg with the cats and without em???

basically can i take em off as one is rattling and doing my tits in!!! i know i can mot it on lpg but will it pass, the lpg side is set to near perfection!