De-cat S500 W220

[Mercv8]

Apparently the cat is on it's way out.

Would it cause problems if i de-catted it?

 

[lynall]

Two cats per side the first one is monitored by the lambda sensors and the second one is not so when you read about people decatting their merc they mean they removed the second unmonitored cat, im sure you could do the fronts but would need either a remap or some way of fooling the lambda sensors,

Item 10 and 30 you can see the two lumpy bits are the cats

Lynall

 

[Mercv8]

Blimey did'nt realise there were so many cats.

Would removing them all make the car run rough then?

If nothing else, would probably drone like mad.

 

[LTD]

Apparently the cat is on it's way out.

Maybe now you question the source of the information ?

 

[lynall]

I would say if you removed them all (four) the car would see a problem and go into limp home mode.
Do a google for lambda emulators.




Lynall

 

[BlackC55]

Only the rear CATS should be removed if at all.

 

[j@stuttgart p]

there are many ways of fooling the ecu into thinking the cat is still there
but you will need a remap to make the most of it and is it worth the agro come mot time ??? i used to decat every car i had and got pig sick of putting it back on for mot.
So if the cat is failing (what syptoms) id just replace it with a good qaulity aftermarket or genuine if poss

 

[Mercv8]

I know a friendly MOT chap

Where would one get it remapped after decatting? On a rolling road?