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325ism50
Newbie Joined: 15-October-2003 Location: Austria Status: Offline Points: 21 |
Topic: converter Posted: 15-March-2004 at 12:19 |
If I take out the converter and fitting the after market box, my engine give more power or less power.
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pualo
Really Senior Member I Joined: 23-October-2003 Location: United Kingdom Status: Offline Points: 284 |
Posted: 15-March-2004 at 14:03 |
Do you mean the catalytic converter in the exhaust? If so, you may notice an improvement at the top end, but from what I understand BMW cat's are pretty efficient already. Also, you may find problems come MOT time, because if a car had one fitted originally, it should retain it. |
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325ism50
Newbie Joined: 15-October-2003 Location: Austria Status: Offline Points: 21 |
Posted: 15-March-2004 at 14:12 |
Yes, I mean the catalytic conventer. Thanks for your quick reply. |
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Stone-IslandV8
Really Senior Member II Joined: 31-January-2003 Location: North Somerset Status: Offline Points: 3015 |
Posted: 15-March-2004 at 15:51 |
Check the dyno figures at Supersprint. They reckon the tuned M3 engines get the best gains by using Decat pipes.
If the car was after 1991 and supplied with a CAT then it would be illegal to run without but I know of a couple of 1995 ~M3s that have passed the MOT without a CAT. |
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Gentlemen I may not have a brain but I do have an idea
Past; E39 540T/E46 328CI/ E39 535/ E39 520/ E36 M3/ E36 318iS jet black Mtech/ E46 320d/ E36 318iS diamond black/ E36 318iS blue Mtech kit |
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325ism50
Newbie Joined: 15-October-2003 Location: Austria Status: Offline Points: 21 |
Posted: 15-March-2004 at 16:05 |
A machanic told me a car with out a CAT give less power. My M50TU model 1994 no more CAT now I replace the CAT with Sibering centere box. so, that mean my engine now give more power or less?
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