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displaying posts 1 to 12 of 12
| Author | Subject: Decatted exhaust |
 glenn_addo
Regular  Location: Poole, Dorset Registered: 22 May 2006 Posts: 183 Status: Offline |
Post #1
Hi I've just bought a car with a decat and powerflow exhaust. Mot is coming up mid March so looking to fit a genuine CAT. Not sure what decat I have fitted at the moment. Can someone tell from the pics if a normal CAT will fit ok as a swap for the decat? Also will it sound rubbish with a normal CAT would I be better off just getting a standard cat and backbox?  |
 Posted 2nd Feb 2011 at 22:18
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gtomi-6
Seasoned Pro  Location: southampton Registered: 16 Jan 2009 Posts: 1,136 Status: Offline |
Post #2
thats ur centerbox  looks to me like the cat has been cut out and a bit of pipe welded in place________________________________________ ph3 gti-6 china blue- mint conditionph2 gti-6 nile blue K.I.A dec 2010 |
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Posted 2nd Feb 2011 at 22:35
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glenn_addo
Regular Location: Poole, Dorset Registered: 22 May 2006 Posts: 183 Status: Offline |
Post #3
Haha shows how much I know about decats doesnt it. Would help if I could actually see under the car |
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Posted 2nd Feb 2011 at 22:38
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gtomi-6
Seasoned Pro Location: southampton Registered: 16 Jan 2009 Posts: 1,136 Status: Offline |
Post #4
you should have rearbox - pipe work - centerbox - cat/decat. that must be a nightmare to jack up!! the decat/cat is conected to you manifold down pipe but bolts with springs on at the front of the car b subframe. from the looks of that weld someone has made a home made decat . i may be wrongut that doesnt look like a normal decat pipe to me________________________________________ ph3 gti-6 china blue- mint conditionph2 gti-6 nile blue K.I.A dec 2010 |
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Posted 2nd Feb 2011 at 22:42
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glenn_addo
Regular Location: Poole, Dorset Registered: 22 May 2006 Posts: 183 Status: Offline |
Post #5
Hmm interesting. I'll try and get some more photos tomorrow. I've got a mate that can do welding so will get him to double check it. If it is a homemade decat would it be hard to fit a standard cat then? I'm thinking about just fitting a standard backbox and decat instead of just replacing the decat with a cat |
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Posted 2nd Feb 2011 at 22:49
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coskev
Seasoned Pro  Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #6
glenn_addo wrote: Hmm interesting. I'll try and get some more photos tomorrow. I've got a mate that can do welding so will get him to double check it. If it is a homemade decat would it be hard to fit a standard cat then? I'm thinking about just fitting a standard backbox and decat instead of just replacing the decat with a cat Will need to cut the de-cat downpipe thats on now to fit a cat,then try and match the cat downpipe upto your exhaust system  ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 3rd Feb 2011 at 02:16
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glenn_addo
Regular Location: Poole, Dorset Registered: 22 May 2006 Posts: 183 Status: Offline |
Post #7
coskev wrote: glenn_addo wrote: Hmm interesting. I'll try and get some more photos tomorrow. I've got a mate that can do welding so will get him to double check it. If it is a homemade decat would it be hard to fit a standard cat then? I'm thinking about just fitting a standard backbox and decat instead of just replacing the decat with a cat Will need to cut the de-cat downpipe thats on now to fit a cat,then try and match the cat downpipe upto your exhaust system Got a mate coming round to check it tomorrow but I think its going to be best to just get a standard cat and backbox and sell the current one thats on there instead of getting a cat to fit |
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Posted 3rd Feb 2011 at 03:49
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gtomi-6
Seasoned Pro Location: southampton Registered: 16 Jan 2009 Posts: 1,136 Status: Offline |
Post #8
if you fit a decat with a standard exhasut system you will blow your boxes to smitherines________________________________________ ph3 gti-6 china blue- mint conditionph2 gti-6 nile blue K.I.A dec 2010 |
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Posted 3rd Feb 2011 at 22:53
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glenn_addo
Regular Location: Poole, Dorset Registered: 22 May 2006 Posts: 183 Status: Offline |
Post #9
Yeah I wouldnt do that. I think I'm going to go for a complete standard exhaust or maybe standard and a different backbox. |
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Posted 3rd Feb 2011 at 23:27
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lewisdmz
Senior User  Location: plymouth Registered: 25 Jul 2009 Posts: 504 Status: Offline |
Post #10
gtomi-6 wrote: if you fit a decat with a standard exhasut system you will blow your boxes to smitherines really? i was thinking of doing this. |
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Posted 3rd Feb 2011 at 23:42
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smegal
Seasoned Pro  Location: Leeds Registered: 26 Dec 2005 Posts: 5,940 Status: Offline |
Post #11
lewisdmz wrote: gtomi-6 wrote: if you fit a decat with a standard exhasut system you will blow your boxes to smitherines really? i was thinking of doing this. The Cat cools the exhaust gas down. ________________________________________ Ex SC-6Now in a Megane R26 |
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Posted 3rd Feb 2011 at 23:58
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gtomi-6
Seasoned Pro Location: southampton Registered: 16 Jan 2009 Posts: 1,136 Status: Offline |
Post #12
the cat burns off all the unused fuel if you run a decat it just goes into your boxes and could re-ignite, i blew my standard exhaust to bits when i fitted decat, magnex decat and scorpion cat back is amazing system. get gussets welded on for added strength and your laughing________________________________________ ph3 gti-6 china blue- mint conditionph2 gti-6 nile blue K.I.A dec 2010 |
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Posted 4th Feb 2011 at 00:46
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