Member Since: 13 Aug 2010
Location: UK
Posts: 14478
I've not noticed any difference in smells with mine.
Allisport put on a replacement pipe when they put the new IC on.
6th Jan 2012 7:47 am
dazsear
Member Since: 25 Jan 2011
Location: Lincolnshire
Posts: 371
How much oof a nightmare is it to get to the bolts at the front of the Cat to remove it?
I have a mate who owns an exhaust company so could get a decat pipe made really cheap!
Daz17 4.4 Autobiography FFRR
57 VW Transporter - now gone!
09 D3 HSE in Black - long gone!
08 RRS TDV8 HST - long long gone!
6th Jan 2012 7:48 am
The Transformer
Member Since: 22 Jan 2010
Location: Leicestershire
Posts: 1791
The bolts on ours were really bad, but came off eventually
6th Jan 2012 8:09 am
zarnd
Member Since: 23 Apr 2010
Location: Kent
Posts: 794
woody32 wrote:
Zarnd I read it like this but I maybe wrong
Hi it states that On vehicles that qualify for a full cat emissions test, check the presence of the catalytic converter.
So the only vehicles that qualify for a full cat emissions test is a petrol engine vehicle and the equipment used to test it is looking for hydrocarbons (HC) Carbon monoxide (CO) and a lambda reading, and on a diesel engine it is only a smoke test not a full cat emissions test and uses a different machine so During this test, a calibrated smoke meter is used to assess the density of the smoke from compression ignition(diesel) engined vehicles.
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Member Since: 05 Mar 2010
Location: Warwickshire
Posts: 1232
Mine was a bit of a nightmare too, lots of spray and waiting for it to soak in, then lots of brute strengthd4 HSE in Corris Grey with Black options pack
D3 with the following
Alive Tuning EGR blanking kit
Alive Tuning Re-map
Alive Atrics console
Samco intercooler hoses (from Alive Tuning)
Alive Tuning De-Cat pipe, lovely tone!
Retrofit OEM Hybrid TV tuner
7th Jan 2012 8:05 am
Alancal
Member Since: 23 Aug 2006
Location: Sandton
Posts: 23
Just to report back.
I had the catalytic converter removed yesterday. The job took one hour fifteen minutes,and cost the equivalent of 50 pounds. . Maybe a bit steep, but well done. The biggest part of the job was to break out the cat from the exhaust box.
The cat was not in bad nick around the edges (against the walls of the box), but the middle did have quite a bit of rubbish which had accumulated.
I can detect no difference in sound from the exhaust. It seems much the same to me, but this may increase at higher speeds, which I have not yet done.
When driving in the Disco I can hear zero difference in the engine sound either. Still very quite.
There is a slight increase in the fumes, but not excessively so.
There is a significant difference in the throttle response, which I hope may also result in a slightly better fuel consumption, but I will test this properly on our trip to KNP next week. The car appears to be slightly smoother but this may be because I'm looking for positives.
Where I noticed the throttle response most was when overtaking or increasing speed once the car is doing say 50-60 kms per hour. The response is not as noticeable at lower speeds, but it is there for sure - I'm not imagining it!
7th Jan 2012 8:07 pm
crwoody
Member Since: 09 Mar 2009
Location: Littleborough
Posts: 2109
I've been thinking about a decat for mine for a while, based on previous experience with my Td5 Defender which went sooo much better with the centre silencer replaced by a straight-through pipe, the exhaust gas is much more free flowing allowing the turbo to respond far quicker, so I figured the cat will have the same effect.
On the MOT point, can you actually see the cat without removing the under shield?
If not, how would they know since the testers are not allowed to remove fixed covers as part of the test?Clive
7th Jan 2012 8:21 pm
The Transformer
Member Since: 22 Jan 2010
Location: Leicestershire
Posts: 1791
No you can't see the cat without removing the shield
http://www.theaa.com/motoring_advice/car-s...-2012.htmlDisco 3 2.7 TDV6 55 Buckingham Blue Base
15% tints / Group Buy Stainless Steel Sill Plates / Trillogy B144 tailpipes / Stupidly Large Steel Bull Bar 8)
EGR Blanking plates / Side Steps / Very Big LR roof Box / BAS remap
New AC condensor / New Clutch & DM Flywheel / New Air Compressor, pipe set & Relay/another new clutch plate thanks to SWMBO/ new cross over pipe (without the body coming off)
Suzuki GSX1400 - its all torque! 8)
Bayliner 175 Capri
Adria 660SP motorhome
8th Jan 2012 10:12 am
crwoody
Member Since: 09 Mar 2009
Location: Littleborough
Posts: 2109
There's no test for it on a diesel and if it can't be seen (or seen as missing) without removing covers, then it shouldn't be a problem.
However anyone concerned about it being spotted as missing could always remove it and knock the guts out of it with a big bar, (it's just a big lump of ceramic honeycomb in the middle,) then put the empty pipe back in. Clive
8th Jan 2012 3:40 pm
gecko_fr
Member Since: 26 Jul 2010
Location: Near Dijon
Posts: 130
I have put a Alive decat pipe.
It now smells different, better sound (due of stainless steel) and I think better torque for the engine.
I can't go back now
8th Jan 2012 3:49 pm
woody32 Site Sponsor
Member Since: 11 Mar 2009
Location: Somerset
Posts: 3551
This is from the new mot manual so stop your worrying
Quote:
The M.O.T. Inspection ManualIssue Date 01 January 2012 7.1Exhaust System Information Method of Inspection Reason for Rejection The overall security of the exhaust system should be assessed;
one or more exhaust mountings missing may not be a Reason for Rejection.
A durable repair to an exhaust system which effectively prevents leaks is acceptable providing the system is structurally sound.
A minor exhaust leak from, for example, a connection joint or a pin hole, is not a Reason for Rejection.
3. On vehicles that qualify for a full cat emissions test, check the presence of the catalytic converter.
And the only vehicles that qualify for a full cat emissions test is a petrol vehicle ,diesel vehicles only have a smoke density test.
Hope this clears up some scaremongering Wanted D4s non runners pm for competitive price.
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8th Jan 2012 7:09 pm
chalky
Member Since: 21 Aug 2008
Location: Yorkshire
Posts: 3145
Woody
And to everyone else, What is this smell thing you are experiencing ?
Can it be smelt in the cabin like the FBH can sometimes be smelt
Or is it more noticeable sat in traffic ?
or maybe whilst loading and engine running ?Only dead fish go with the Flow !
8th Jan 2012 10:54 pm
woody32 Site Sponsor
Member Since: 11 Mar 2009
Location: Somerset
Posts: 3551
The smell i experienced was in the cab when sat in traffic not sure if it was coming up through the heater but could defiantly smell it.I think the smell is sulphur i have since repaired a low pressure fuel pump fault i had not sure if this had made it worse i will be removing the cat again this week so will find out if its better or not.
woodyWanted D4s non runners pm for competitive price.
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8th Jan 2012 11:05 pm
Moo D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14478
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