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Exhaust Help/advice


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#1 chrisf

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Posted 20 April 2014 - 05:23 AM

Hello guys, my mini has just failed it's mot on some small things, 1st time on the road in 5 years so it was expected and all are simple fixes so pretty happy with her.

Only thing I'm in doubts with is the exhaust. It's a 93 so needs a cat but got a piece of pipe welded in. Didn't really notice till the mot anyway.... I've got a cat and I'm planning on making an exhaust up at work on Monday/Tuesday night with stainless pipe. After having a look I've got a question what's the round box before the back box? Do I need it or can I just have the cat piped straight to the back box?

#2 Fast Ivan

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Posted 20 April 2014 - 06:43 AM

that would be the middle silencer, I don't think its an mot issue so you can leave it and go straight through from the cat, I had this set up on mine and had no issues



#3 chrisf

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Posted 20 April 2014 - 07:08 AM

so if i took it out to make it sound a bit louder it wouldn't effect anything but noise? was yours alot louder without it?


Edited by chrisf, 20 April 2014 - 07:09 AM.


#4 IainStallard

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Posted 20 April 2014 - 07:13 AM

Is yours an injection model or a carb model? If its a carb model, it doesn't need a cat as it doesn't have to pass a full emissions test

#5 cal844

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Posted 20 April 2014 - 08:08 AM

Is yours an injection model or a carb model? If its a carb model, it doesn't need a cat as it doesn't have to pass a full emissions test

Indeed, my 1993 carb car has the manifold to back box link pipe, its loud :)

Spec is
1.75inch LCB manifold
1.75 to 2.25 Y piece
2.25 to 3 inch link pipe
3 inch rear box with twin tail pipes

Edited by cal844, 20 April 2014 - 08:08 AM.


#6 chrisf

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Posted 20 April 2014 - 10:48 AM

Great thanks for the info guys




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