RULE 57 cats.......

[Marc_G]

I was looking to double check the insurance risk involved with changing the cat to 100 or 200 cell......google AI came back with this....



So yeah, as i figured, its my risk re; fully comp insurance. Which is not something im will to take on a very expensive investment.

But then i read the footnote at the bottom.....



now i have to go check if all 3 of mine are type approved.

[bogie]

I wonder what the MOT tester would report if there was an unstrained cat in the car during the test ?

[mac_doctor]

I have no idea what the answer actually is, but I would not trust "AI" to get it right.

[Marc_G]

I never trust the AI Mac. Its just a means to drilling down.

But the short answer to the real question is....
IF have de-cat, or 100 or 200 cell cats on a post 2001 car (none of which can be type approved) then this will invalidate your fully comp insurance to 3rd party if you dont tell the insurer.
And if you do disclose most non specialist will refuse to cover you.

There doesnt seem to be any grey area to interpret in.....regardless if the cat passes an MOT test.
taken from GOV.UK:

"Catalytic converters
Vehicles registered after March 2001
Fitting a catalytic converter
If you install a catalytic converter on a vehicle registered on or after 1 March 2001, you must check that it is type-approved.

Read the section of this guidance on checking type approval.

Supplying a catalytic converter
It is illegal to supply catalytic converters that are not type-approved for use on vehicles registered after 1 March 2001."

Buyer beware of course. You take your chances.