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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731
Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
Those with weak stomachs, look away now...

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10 minutes and a lot of dust - hopefully not asbestos Shocked
If I can, I'll be testing emissions before and after EGR blanking and cat removal - can probably squeeze some school project out of it for my lazy son :thumbsup:

Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green  Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #176749 18th Oct 2012 9:05am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2669
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
ZeDefender wrote:
10 minutes and a lot of dust - hopefully not asbestos Shocked



I thought cats were made of platinum, hence the exorbitant cost? --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



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Post #176750 18th Oct 2012 9:07am
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731
Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
Ceramic honeycomb with platinum coating (must be very thin as I couldn't see any...) Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #176758 18th Oct 2012 9:19am
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mermoto



Member Since: 21 Sep 2011
Location: Essex
Posts: 326
ZeDefender wrote:
Those with weak stomachs, look away now...

Click image to enlarge

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Click image to enlarge
10 minutes and a lot of dust - hopefully not asbestos Shocked
If I can, I'll be testing emissions before and after EGR blanking and cat removal - can probably squeeze some school project out of it for my lazy son Thumbs Up


Bloody hell tha's gotta improve exhaust gas flow :shock:

Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green
Post #176826 18th Oct 2012 3:14pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8262
 2011 Defender 110 Puma 2.4 USW Stornoway Grey
will you get increased turbo lag though? Cheers

James
110 2010 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #176882 18th Oct 2012 7:36pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731
Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
That (and many others) is the big question, and there's only one way to find out Thumbs Up
Any idea how I might objectively measure it? I've got a while to plan before I can put the de-cat to the test. Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #176894 18th Oct 2012 7:58pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8262
 2011 Defender 110 Puma 2.4 USW Stornoway Grey
how long is a while? Cheers

James
110 2010 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #176905 18th Oct 2012 8:28pm
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610
United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
jst wrote:
will you get increased turbo lag though?


Theory is the turbo will spool up quicker.... Thumbs Up If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #176929 18th Oct 2012 9:21pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8262
 2011 Defender 110 Puma 2.4 USW Stornoway Grey
do you not need resistance to reduce flow to help build pressure to get it spooling?

i can see the benefits of no restrictions at higher flow rates.

i have been toying with the idea of de-cat for a while, in fact have had one on the shelf ready to go for nearly 4 years...... Cheers

James
110 2010 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #176932 18th Oct 2012 9:26pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731
Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
jst wrote:
how long is a while?

That depends on how long hernia surgery takes to heal Rolling Eyes
Don't imagine I'll be crawling under the exhaust until the dressings come off Laughing

And yes - the conflicting turbo, power and emissions theories is why I'm doing it. There aren't many vehicles you can muck about with so easily and reversibly Thumbs Up Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #176955 18th Oct 2012 10:04pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20820
United Kingdom 
How easy / difficult is it to remove the cat anyway? Never tried it myself.. _\Hennessey|Venom| F5/___
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Post #176963 18th Oct 2012 10:14pm
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610
United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
custom90steve wrote:
How easy / difficult is it to remove the cat anyway? Never tried it myself..


K9F wrote:
landy andy wrote:
You will have to remove the gearbox cross member to get it out tho. Andy


Yes you do! Unless you wish to take drastic action and cut the old exhaust out....the decat pipe can then be manipulated into place without unbolting the gearbox cross member. (I didn't cut mine out but I know a man that did!).

On the Puma the decat being the size of an immersion heater I needed to slightly apply pressure with a jack on the gearbox to give me the extra couple of millimetres room to facilitate the 'cat' removal. Box o' spanners and a couple of hours it should be done whatever method/approach you take. Good luck! Thumbs Up
 If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #176973 18th Oct 2012 10:34pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8262
 2011 Defender 110 Puma 2.4 USW Stornoway Grey
ZeDefender wrote:
jst wrote:
how long is a while?

That depends on how long hernia surgery takes to heal Rolling Eyes


about 1 week then Cheers

James
110 2010 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #177019 19th Oct 2012 8:37am
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DarrenJ



Member Since: 07 May 2012
Location: North Beds
Posts: 312
United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Stornoway Grey
Looking forward the facts and figures, great project Thumbs Up Darren
Post #177025 19th Oct 2012 8:49am
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731
Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
jst wrote:
about 1 week then

Would be nice (but perhaps a little optimistic Whistle)

Just checked with our local mechanic who has agreed to check the emissions before and after decat. Normally he would only measure smoke particles for a diesel, but he says CO2, CO and HC shouldn't be a problem. As long as I don't mention the word "decat" he is legally OK. Pity he can't fit it for me but he would be breaking the law. He also can't measure NOx (EGR blanking) at the exhaust but says it might be possible via diagnostics.
Anyone know about this (I haven't noticed on Scangauge II)?

Matt Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #177030 19th Oct 2012 9:17am
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