L

leemx1

New Member
decatted my td4 yesterday, turbo seams to spin up earlier and engine feels more responsive, will update on economy if it has made any difference.:)
 
rhodie said:
Won't it fail MOT with no cat?
Click to expand...

No it can't.

Only petrols need a cat.

Have a search on here - been discussed at length.

Check the Testers manual too for confirmation, if you wish.

They VOSA even issued a clarification in their regular notices / updates.

Singvogel.
 
rhodie said:
Ok just wondered will wait to see if it makes a difference I'm looking for my next mod
Click to expand...

Me too - I'm in no particular hurry, but when the exhaust needs replacing - I'm going to get rid of the cat.

Leemx1 -
How did you actually do it?
Put in a short new piece of pipe yourself? -
Or did you find a supplier for it?

S.
 
I've done my td5! I bought a terrafirma replacement pipe, I found the turbo seemed to spin up maybe 200 rpm earlier and it freed up the top end, as for power? No idea, but it seemed a bit more willing:)


DD
 
singvogel,
i took the middle section off the vehicle, then with a 1mm cutting disc cut a 8x6 inch rectangle out of the top of the cat/filter. i then chiseled out the insides replaced the piece ofmetal that i cut out and then welded it back up. so it looks exactly the same. You cannot see any difference looking from underneath.
 
With the cat off and a long bar, you can knock the insides out with out the need to cut into it, did it 2 years ago been through 2 test no prob.
Had to do it as had a turbo let go and the oil blocked the cat up.
 
I had a new bit of pipe made up for my L series for about £40. There was a spate of Pikey related cat thefts in the area and I thought I'd rather this than have them cut the section out and me having to replace the lot...

Seemed to rev cleaner but I dunno for sure..
 
spacemonkey
diesel cats are worthless, they are a filter and there is no precious metals inside.
people call then cats but actually they are particle filters, its like a ceramic type material inside.
 
My mate is a mot tester,and he said its a fail with a decat for Diesel,he said he wouldn't even pass mine,i had to put the cat back on.
 
Chris D said:
My mate is a mot tester,and he said its a fail with a decat for Diesel,he said he wouldn't even pass mine,i had to put the cat back on.
Click to expand...

Sorry pal, but that is complete and utter bolloc*s.

I wouldn't go near any MOT garage that said that - as they have obviously not read the latest/current VOSA Tester's Inspection Manual or the VOSA regular bulletins and updates.

VOSA had so many folks 'phone them about this that they actually issued a memo clarifying the situation.

Only petrol engined vehicles are subjected to a full cat and emmisions test and will fail if there was one fitted at the factory and it is missing.

Diesels only get a smoke test - the so-called 'cat' on a diesel is actually a particulate filter and is a different beast alltogether.

Get the VOSA downloads and read the truth.

Singvogel.
 
Last edited:
That why you are better to remove the inner by what ever way you fine easier and replace, it then looks like it should do and will not get a second glance for mot
 
Singvogel said:
Sorry pal, but that is complete and utter bolloc*s.

I wouldn't go near any MOT garage that said that - as they have obviously not read the latest/current VOSA Tester's Inspection Manual or the VOSA regular bulletins and updates.

VOSA had so many folks 'phone them about this that they actually issued a memo clarifying the situation.

Only petrol engined vehicles are subjected to a full cat and emmisions test and will fail if there was one fitted at the factory and it is missing.

Diesels only get a smoke test - the so-called 'cat' on a diesel is actually a particulate filter and is a different beast alltogether.

Get the VOSA downloads and read the truth.

Singvogel.
Click to expand...
Thanks for this Singvogal,Ill have a look at Vosa,he's a bit of a knob anyway :)
 
Chris D said:
My mate is a mot tester,and he said its a fail with a decat for Diesel,he said he wouldn't even pass mine,i had to put the cat back on.
Click to expand...

He obviously isn't any good at his job!!! I would find a decent mot station! One were they read updates and actually bother to get it right! It's why I pay a little bit more but I know it's done properly


DD
 
You must log in or register to reply here.

Similar threads

andyfreelandy
Freelander 1 TD4 Sport turbo whine
Replies
2
Views
395
andyfreelandy
andyfreelandy
R
td4 engine man light
Replies
3
Views
398
Andy Warren
Andy Warren
J
Po299 fault code
Replies
4
Views
601
J. glasspool
J
M
Freelander 1 Advice please
Replies
8
Views
784
pwood999
pwood999
HillbillyDave
Central locking help
Replies
1
Views
547
Alteredtech
Alteredtech