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Hi, my mates mentioned to me about gettin a de-cat pipe for my dci120 is it worth doing it for that little extra power ?? I can get them made cheep as another mate works at blue flame exhausts so cost isn't an issue :) but wat do people think??

Cheers Chris
 

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I put a custom made back box which gave me sound and power. But I've been in two minds about the decat due to mot passing
 

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It only smokes when you give it some beans and even then you only get a little puff of smoke. On normal driving or on idle there is no smoke what so ever.
 

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Is there any point decatting whith a standard back box???
unlike a cat a backbox is not as restrictive, as a cat restricts flow of exhaust gases as it converts as it passes throw its honeycomb structure (builds up like a traffic jam). backboxes are purely for dampening exhaust note (exhaust noise)

so in simples yes even with standard backbox
 
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