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New
by Rex_tulips - 30/07/25 07:59 PM
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Forums34
Topics48,365
Posts813,389
Members9,215
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Most Online1,046
Aug 24th, 2023
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Joined: Jun 2013
Posts: 1,299
Has a lot to Say!
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Has a lot to Say!
Joined: Jun 2013
Posts: 1,299 |
Anyone know what the small section on the exhaust is - just engine side of the Heat Shield? thanks:)) Here in the colonies the head pipe bends round to a catalytic converter ...  to the EPA
 2013 M3W # 793 'Mosquito'
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Joined: Mar 2013
Posts: 1,015 Likes: 1
Has a lot to Say!
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Has a lot to Say!
Joined: Mar 2013
Posts: 1,015 Likes: 1 |
... and it's probably the cause of the glowing red headers after nothing more than a mildly sporting drive home at night. Whilst I admire the spectacle, I don't much care for the probably restriction to performance....
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Joined: Jan 2013
Posts: 417
Learner Plates Off!
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Learner Plates Off!
Joined: Jan 2013
Posts: 417 |
has anyone tried knocking out some of the baffles inside of the muffler?
b
sfmorgan.tumblr.com
blake
sfmorgan.tumblr.com
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Joined: Mar 2013
Posts: 1,015 Likes: 1
Has a lot to Say!
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Has a lot to Say!
Joined: Mar 2013
Posts: 1,015 Likes: 1 |
I am told it makes quite a difference, but getting the knocked-out baffles removed from the pipe might be a challenge. Whether you'd hear the rattling loose baffles over the probably much noisier exhaust, remains to be seen though.....!
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Joined: Oct 2008
Posts: 3,422 Likes: 5
Goodwood Drifter Talk Morgan Addict
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OP
Goodwood Drifter Talk Morgan Addict
Joined: Oct 2008
Posts: 3,422 Likes: 5 |
a friend picked up the waranty-pipe, starting from the clamp it was mounted in 15minutes back on the road 
Steven
sold: M3W, Aeromax,V6, 4/4 4seater
now: +fourLM62
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Joined: Apr 2013
Posts: 14
New to Talk Morgan
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New to Talk Morgan
Joined: Apr 2013
Posts: 14 |
That is the 140 cell (very restrictive catalytic convertor) - best removed and/or replaced to improve flow! Of course this may well hasten the end of the world as we know it.
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Joined: Mar 2013
Posts: 1,015 Likes: 1
Has a lot to Say!
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Has a lot to Say!
Joined: Mar 2013
Posts: 1,015 Likes: 1 |
400 cell in fact - proper fine filtering going on in there for sure - and all squeezed into a pipe the size of a small torch. Rubbish solution, but necessary to save the planet. I suspect that the first company that makes a perfectly matching CAT replacement pipe will sell them by the bucket-load. Shouldn't cost much surely?!
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Joined: Oct 2013
Posts: 6,723 Likes: 2
Talk Morgan Sage
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Talk Morgan Sage
Joined: Oct 2013
Posts: 6,723 Likes: 2 |
The CAT is the limiting factor in exhaust tuning. I'd be willing to bet that a de-CAT system would flow so much quicker, and still sound reasonable.
To lift the lid on the tin marked 'worms' again, does the fact that it's not classified as a four wheeled car allow an MoT without any emissions checking? There's certainly no emissions test on motorbikes & junking the CAT is the first thing people do when tuning.
Steve
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Joined: Oct 2012
Posts: 2,776 Likes: 59
Talk Morgan Expert
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Talk Morgan Expert
Joined: Oct 2012
Posts: 2,776 Likes: 59 |
To lift the lid on the tin marked 'worms' again, does the fact that it's not classified as a four wheeled car allow an MoT without any emissions checking? Just to give the can of worms a good stir; does anyone know what the reaction of your average MOT station is going to be when faced with a M3W? Will they have a clue which regulations to apply?
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Joined: Aug 2013
Posts: 15,794 Likes: 14
Formerly known as Aldermog Member of the Inner Circle
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Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 14 |
To lift the lid on the tin marked 'worms' again, does the fact that it's not classified as a four wheeled car allow an MoT without any emissions checking? Just to give the can of worms a good stir; does anyone know what the reaction of your average MOT station is going to be when faced with a M3W? Will they have a clue which regulations to apply? Good question: According to VOSA a Trike over 450kg and or over 50cc is "Class 4" and this INCLUDES emission testing. It is all here: MOT Testers Notes
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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