Post #76
A sports CAT should not fail the MOT on emissions unless it is broken.________________________________________
"Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6
2000 (X), Moonstone
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 stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Peugeot 306 GTi-6 2000 (X), Moonstone |
 Posted 29th Feb 2012 at 08:51
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smegal
Seasoned Pro  Location: Leeds Registered: 26 Dec 2005 Posts: 5,940 Status: Offline |
Post #77
stan_306gti6 wrote: A sports CAT should not fail the MOT on emissions unless it is broken. Mine fails too. I guess the ones fitted by longlife and MIJ are just crap. ________________________________________ Ex SC-6Now in a Megane R26 |
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Posted 29th Feb 2012 at 09:31
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #78
Surely the whole point of buying a sports CAT is to ensure the vehicle passes the MOT but is a bit freer flowing than a standard CAT??  ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 29th Feb 2012 at 14:35
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smegal
Seasoned Pro Location: Leeds Registered: 26 Dec 2005 Posts: 5,940 Status: Offline |
Post #79
Remember that the low boost SC kit runs quite rich at full throttle. The primitive Bosch440cc injectors don't help with atomization either (that is intentional to prevent DET).A CAT with a ceramic substrate may be better, my first one properly shat istself last yr. My new one failed its MOT.I reckon a more expensive one may be more durable, I was considering the genuine cat off a forced induction car with similar power and trying that. ________________________________________ Ex SC-6Now in a Megane R26 |
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Posted 29th Feb 2012 at 17:33
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fatlapit
Seasoned Pro  Location: STOCKSFIELD Registered: 02 Nov 2010 Posts: 3,040 Status: Offline |
Post #80
stan_306gti6 wrote: A sports CAT should not fail the MOT on emissions unless it is broken. not strictly true quite the opposite mate you will struggle with a sports cat tbh stan mate. ________________________________________ |
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Posted 29th Feb 2012 at 17:35
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fatlapit
Seasoned Pro Location: STOCKSFIELD Registered: 02 Nov 2010 Posts: 3,040 Status: Offline |
Post #81
just chuck a stock system on it for mot there are a few on fleabay________________________________________ |
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Posted 29th Feb 2012 at 17:36
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smegal
Seasoned Pro Location: Leeds Registered: 26 Dec 2005 Posts: 5,940 Status: Offline |
Post #82
fatlapit wrote: just chuck a stock system on it for mot there are a few on fleabay  ________________________________________ Ex SC-6Now in a Megane R26 |
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Posted 29th Feb 2012 at 17:38
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fatlapit
Seasoned Pro Location: STOCKSFIELD Registered: 02 Nov 2010 Posts: 3,040 Status: Offline |
Post #83
or u must know someone who runs a mot place so u dont need a cat________________________________________ |
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Posted 29th Feb 2012 at 17:45
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allesclar
Seasoned Pro  Location: Sheffield Registered: 17 May 2009 Posts: 4,254 Status: Offline |
Post #84
it was a longlife model and yes i am going to get mine gutted and put back if that is the issue ________________________________________ Team allesclar ® |
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Posted 29th Feb 2012 at 17:59
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smegal
Seasoned Pro Location: Leeds Registered: 26 Dec 2005 Posts: 5,940 Status: Offline |
Post #85
I am tempted to get mine gutted. It is a waste of ponies as it stands now.________________________________________ Ex SC-6Now in a Megane R26 |
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Posted 29th Feb 2012 at 20:05
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smegal
Seasoned Pro Location: Leeds Registered: 26 Dec 2005 Posts: 5,940 Status: Offline |
Post #86
Here is my old cat! ________________________________________ Ex SC-6Now in a Megane R26 |
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Posted 29th Feb 2012 at 20:08
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m306
Seasoned Pro  Location: south coast Registered: 16 May 2011 Posts: 1,074 Status: Offline |
Post #87
Is there a technical way of gutting a cat or is it purely cut it open, remove honeycomb and weld back together?________________________________________ supercharged China gti6 - Thu 16th Sep 1999 - sold2010 megane rs250 |
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Posted 29th Feb 2012 at 21:21
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #88
yup!________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 29th Feb 2012 at 21:31
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m306
Seasoned Pro Location: south coast Registered: 16 May 2011 Posts: 1,074 Status: Offline |
Post #89
Cool, thanks Mei________________________________________ supercharged China gti6 - Thu 16th Sep 1999 - sold2010 megane rs250 |
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Posted 29th Feb 2012 at 21:44
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #90
btw, those that failed MOT's with sports cat, maybe the mapping needed altering, or they weren't hot enough.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 29th Feb 2012 at 21:59
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allesclar
Seasoned Pro Location: Sheffield Registered: 17 May 2009 Posts: 4,254 Status: Offline |
Post #91
mine was a standard ECU so hasnt been touched but could still need remapping.________________________________________ Team allesclar ® |
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Posted 29th Feb 2012 at 22:01
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m306
Seasoned Pro Location: south coast Registered: 16 May 2011 Posts: 1,074 Status: Offline |
Post #92
welshpug! wrote: btw, those that failed MOT's with sports cat, maybe the mapping needed altering, or they weren't hot enough. Oh do you think the sc map is done for a decat system and may not be suitable for a sports cat then? ________________________________________ supercharged China gti6 - Thu 16th Sep 1999 - sold2010 megane rs250 |
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Posted 29th Feb 2012 at 22:40
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rich_w
Seasoned Pro  Location: Havant, Hampshire Registered: 29 Jul 2004 Posts: 5,412 Status: Offline |
Post #93
m306 wrote: welshpug! wrote: btw, those that failed MOT's with sports cat, maybe the mapping needed altering, or they weren't hot enough. Oh do you think the sc map is done for a decat system and may not be suitable for a sports cat then? The software is written for a de-cat, not a sports cat. We don't recommend sports cats, they seem be a waste of time and money, and still cost you BHP too. Emissions failure with a sports cat is most likely down to the sports cat being shite - any competent MOT tester will have made sure it's hot enough prior to testing. We've MOT'd numerous low and high boost cars, we chuck an OEM cat on them just for the test (they are done legitimately!), and we've never had one fail. So, the emissions failure won't be related to the ECU software. The ECU software we've developed with Wayne is very 'clean' at part throttle, hence the conversion retains good fuel economy, plus all emission control features in the OEM software are retained in our S/C software.  ________________________________________ Contact Details:rich@lynxpowerengineering.co.uk 07732 822546 |
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Posted 29th Feb 2012 at 23:04
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m306
Seasoned Pro Location: south coast Registered: 16 May 2011 Posts: 1,074 Status: Offline |
Post #94
Well that changes my thoughts on the ideal setup for me again. Thanks for explaining that Rich, looks like I will be going decat after all then________________________________________ supercharged China gti6 - Thu 16th Sep 1999 - sold2010 megane rs250 |
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Posted 29th Feb 2012 at 23:54
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smegal
Seasoned Pro Location: Leeds Registered: 26 Dec 2005 Posts: 5,940 Status: Offline |
Post #95
rich_w wrote: m306 wrote: welshpug! wrote: Emissions failure with a sports cat is most likely down to the sports cat being shite - any competent MOT tester will have made sure it's hot enough prior to testing. My insurer said that they wouldn't cover me unless it had a cat so the sports cat is a nod to that. ________________________________________ Ex SC-6Now in a Megane R26 |
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Posted 1st Mar 2012 at 09:31
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rich_w
Seasoned Pro Location: Havant, Hampshire Registered: 29 Jul 2004 Posts: 5,412 Status: Offline |
Post #96
smegal wrote: rich_w wrote: m306 wrote: welshpug! wrote: Emissions failure with a sports cat is most likely down to the sports cat being shite - any competent MOT tester will have made sure it's hot enough prior to testing. My insurer said that they wouldn't cover me unless it had a cat so the sports cat is a nod to that. That's fair enough - and is normally the case. It's a grey area TBH, so many modified cars don't have cats, I guess most people just plead ignorance... I guess the best option would be to cut an OEM cat open, remove the core, weld a straight section of tube in there to help with laminar gas flow, the weld the casing of the cat back together. Then at least it looks like it has a cat  ________________________________________ Contact Details:rich@lynxpowerengineering.co.uk 07732 822546 |
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Posted 1st Mar 2012 at 09:51
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #97
Ahh I didn't realise that's how they had been set up, how are you going to get around the new MOT laws that state the cat must be present then?________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 1st Mar 2012 at 10:46
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rich_w
Seasoned Pro Location: Havant, Hampshire Registered: 29 Jul 2004 Posts: 5,412 Status: Offline |
Post #98
welshpug! wrote: Ahh I didn't realise that's how they had been set up, how are you going to get around the new MOT laws that state the cat must be present then? We always fit a cat for the MOT. ________________________________________ Contact Details:rich@lynxpowerengineering.co.uk 07732 822546 |
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Posted 1st Mar 2012 at 10:51
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m306
Seasoned Pro Location: south coast Registered: 16 May 2011 Posts: 1,074 Status: Offline |
Post #99
rich_w wrote: smegal wrote: rich_w wrote: m306 wrote: welshpug! wrote: Emissions failure with a sports cat is most likely down to the sports cat being shite - any competent MOT tester will have made sure it's hot enough prior to testing. My insurer said that they wouldn't cover me unless it had a cat so the sports cat is a nod to that. That's fair enough - and is normally the case. It's a grey area TBH, so many modified cars don't have cats, I guess most people just plead ignorance... I guess the best option would be to cut an OEM cat open, remove the core, weld a straight section of tube in there to help with laminar gas flow, the weld the casing of the cat back together. Then at least it looks like it has a cat Is that a service you could do Rich? Cos it just so happens that my cat is f*cked so could be ideal for that, instead of using a good one ________________________________________ supercharged China gti6 - Thu 16th Sep 1999 - sold2010 megane rs250 |
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Posted 1st Mar 2012 at 18:41
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rich_w
Seasoned Pro Location: Havant, Hampshire Registered: 29 Jul 2004 Posts: 5,412 Status: Offline |
Post #100
m306 wrote: rich_w wrote: smegal wrote: rich_w wrote: m306 wrote: welshpug! wrote: Emissions failure with a sports cat is most likely down to the sports cat being shite - any competent MOT tester will have made sure it's hot enough prior to testing. My insurer said that they wouldn't cover me unless it had a cat so the sports cat is a nod to that. That's fair enough - and is normally the case. It's a grey area TBH, so many modified cars don't have cats, I guess most people just plead ignorance... I guess the best option would be to cut an OEM cat open, remove the core, weld a straight section of tube in there to help with laminar gas flow, the weld the casing of the cat back together. Then at least it looks like it has a cat Is that a service you could do Rich? Cos it just so happens that my cat is f*cked so could be ideal for that, instead of using a good one Yeah, it's something we could do no problem ________________________________________ Contact Details:rich@lynxpowerengineering.co.uk 07732 822546 |
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Posted 1st Mar 2012 at 21:47
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