 | Home > Puma (Tdci) > Decat and Mot? |
 
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it really hurts... Is there any measurable increase in pollution without cat?
| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5813  
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Are they checking for particles/soot, or emission gases?
If soot as in the UK, removing the cat helps, but if checking gases you may have to keep it, or put it back on for the test. Andy |
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4th Dec 2011 11:52am |
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| CRJ Member Since: 12 Mar 2011 Location: Sealand - Denmark Posts: 253  
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They are checking the co2 level - I think.
CRJ 88 Ser. 3 1980 -sold Puma 130 - 08- sold 90 200tdi 1991 - sold 88 Ser. 3 1977 200 TDI 110 CC 2003 |
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4th Dec 2011 11:58am |
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| BigMike Member Since: 13 Jul 2010 Location: Lancashire Posts: 2253 
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I don't think it would make any difference at all. Cats only work at sustained vehicle speed / revs anyway. A quick blast of the throttle and the cat does nothing at all.
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4th Dec 2011 11:59am |
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| CRJ Member Since: 12 Mar 2011 Location: Sealand - Denmark Posts: 253
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Ok thanks a lot - I guess I will give it a go - maybe along with a mid pipe replacement.
CRJ 88 Ser. 3 1980 -sold Puma 130 - 08- sold 90 200tdi 1991 - sold 88 Ser. 3 1977 200 TDI 110 CC 2003 |
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4th Dec 2011 12:04pm |
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| szracer Member Since: 10 Oct 2010 Location: Cotswolds Posts: 356  
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...was just waiting for K9F to come back with a list of threads....
  
2010 110 XS USW (the slow one) 1960 Alfa Romeo Giulietta SZ (the fast one) 2005 Ducati ST3 1954 Sunbeam S8 |
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4th Dec 2011 12:12pm |
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| CRJ Member Since: 12 Mar 2011 Location: Sealand - Denmark Posts: 253
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well tried the search at first - decat+mot - but nothing relevant showed up.....know I canīt be the first asking about this......
CRJ 88 Ser. 3 1980 -sold Puma 130 - 08- sold 90 200tdi 1991 - sold 88 Ser. 3 1977 200 TDI 110 CC 2003 |
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4th Dec 2011 12:16pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610 
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Too slow but they are there....Bet you looked!  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!! |
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4th Dec 2011 1:11pm |
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| driver Member Since: 02 Aug 2009 Location: bude , cornwall Posts: 206 
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I have replaced the down pipe witha de cat version and the centre box with a replacment box so the only silencer is the rear one now, It has passed the last 2 MOT's with this set up without a word from the examiner about this change interestingly the emmisions now are down by a third compared to befor these changes and has got a "fast pass" both times.
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4th Dec 2011 2:19pm |
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| T1G UP Member Since: 08 Dec 2009 Location: Bath Posts: 3101 
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i think i'll de cat mine and get an alive centre pipe with a little centre box
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4th Dec 2011 2:22pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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You're not! Oh well here we go....  Proverbial K9 list coming up!
http://www.defender2.net/forum/topic9379.h...spectively http://www.defender2.net/forum/topic8411.h...p;start=15 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!! |
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4th Dec 2011 3:28pm |
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| CRJ Member Since: 12 Mar 2011 Location: Sealand - Denmark Posts: 253
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Is there a noticeable effect - apart from the sound? And K9F you are risking getting a PM from me the next time I canīt find what I am looking for
Best regards CRJ 88 Ser. 3 1980 -sold Puma 130 - 08- sold 90 200tdi 1991 - sold 88 Ser. 3 1977 200 TDI 110 CC 2003 |
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4th Dec 2011 4:53pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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CRJ,
'PMs' always wecome! Only too glad to be of assistance. I know how frustrating it can be searching for something, putting in a key word and being inundated with duplicated threads.  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!! |
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4th Dec 2011 5:08pm |
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| Kez Member Since: 11 Apr 2011 Location: UK Posts: 271 
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Mine also has no cat or centre box, has passed two MOT's with no comment.
BUT it will throw up engine warning light now and again (I just reset mine with a scanguage) - when I mentioned this at its last service the main dealer said warning its 'due to the improvement in gas flow and nothing to worry about'. |
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5th Dec 2011 5:02pm |
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| Alive Tuning Member Since: 01 Mar 2010 Location: Louth Posts: 610
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No, that is not at all normal. We have fitted countless downpipes and exhaust systems to Puma's, and not ever (to my knowledge) had an engine warning lamp illuminated. |
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5th Dec 2011 5:07pm |
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