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      01-08-2012, 06:55 AM   #21
parapaul
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Drives: E91 330d M Sport
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It shouldn't do - cat removal is a fail, because it interferes with the emissions on a petrol engine. From the MOT manual Section 7.4 on the VOSA website:

http://www.transportoffice.gov.uk/cr...sandguides.htm

Quote:
Reason for Rejection

1. The exhaust emits dense blue or clearly visible black smoke for a period of 5 seconds at idle

2. The exhaust emits dense blue or clearly visible black smoke during acceleration which would obscure the view of other road users

Note: The criterion is density and not volume of smoke. The description ‘dense smoke’ includes smoke or vapour which largely obscures vision.
A well maintained engine shouldn't produce anywhere near that quanity of smoke.
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Just how many Yorkshire sheep can you fit inside one exhaust?