MINI2

flatland69 · Aug 10th, 2007, 02:28 PM

Anyone know +- how much power/torque I'll get out of removing the cat converter on my stock '03 Mini Cooper?

I live in a third world country, so no one minds

Richard Crofts · Aug 10th, 2007, 03:09 PM

SA is hardly 3rd world

removal of the cat is good for a chunck of torque and few BHP. Not masses as the stock manifold is pretty naff but you will see some 'feelable' change

flatland69 · Aug 10th, 2007, 03:39 PM

I know, SA's cool, I'm just being dramatic... lol. So think if I do the manifold too it'll be really noticable? I'm looking to do an induction kit, exhaust, cat removal, cams...can't wait!

Bhozar · Aug 10th, 2007, 03:44 PM

Quote: Originally Posted by flatland69 (original)

I know, SA's cool, I'm just being dramatic... lol. So think if I do the manifold too it'll be really noticable? I'm looking to do an induction kit, exhaust, cat removal, cams...can't wait!

I would suggest getting a manifold with a removable cat/de-cat pipe. If you can tolerate the extra noise along with an exhaust.

flatland69 · Aug 10th, 2007, 04:15 PM

Hmm i think I might just do that...there's some pretty cheap ones on ebay! Does the standard Mini exhaust have 1 or 2 mufflers on it?

Bhozar · Aug 10th, 2007, 04:18 PM

Quote: Originally Posted by flatland69 (original)

Hmm i think I might just do that...there's some pretty cheap ones on ebay! Does the standard Mini exhaust have 1 or 2 mufflers on it?

It has two in line at the back of the car. More power can be gained if you one-ball it. You can see the GTT pipe that shows how its done. It just cuts one of them out and replaces it with one bend, rather than several.

Not sure if there is a central resenator on the stock MCS exhaust. There is on my JCW exhaust.

flatland69 · Aug 10th, 2007, 04:26 PM

is that for a non-s? I have a normal cooper...

Bhozar · Aug 10th, 2007, 04:42 PM

Quote: Originally Posted by flatland69 (original)

is that for a non-s? I have a normal cooper...

Sorry, I have an S. I cant remember how the exhaust was setup on my Cooper.

flatland69 · Aug 10th, 2007, 08:17 PM

ok...thanks for the help!

Mini4000 · Aug 11th, 2007, 02:40 PM

Quote: Originally Posted by flatland69 (original)

ok...thanks for the help!

i assume u will be heading towards 180 to 190 NM (torque ) with a reflash of your ecu and better flowing aftermarket exhaust system (f.ex a la Supersprint, miltek, alta, ....)

a friend of mine had the SS full exhaust system with metalic cat. converter and with reflash of ecu, was putting down +- 180 NM....

without CAT should be more NM , and loads more FUN....hehe... pop burble pop.... even with a COOPER.....

but grote broer koekeloer will be hearing u ....

flatland69 · Aug 12th, 2007, 09:38 PM

Wow, that much? Nice..can't wait. It's going to be hard getting an aftermarket exhaust in SA though. Yeah it'll be NOISY, but it's a good thing in a way!

Richard Crofts · Aug 13th, 2007, 11:24 AM

Centre muffler (on the straight pipe) and then a 1 can rear box muffler section on the rear of the cooper if I rememeber right.

Aug 10th, 2007, 02:28 PM	#1
flatland69 MINI2 Newbie Join Date: Jul 2007 Local Time: 12:07 AM Posts: 46 Offline	Cat Converter Removal Anyone know +- how much power/torque I'll get out of removing the cat converter on my stock '03 Mini Cooper? I live in a third world country, so no one minds

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Aug 10th, 2007, 03:09 PM	#2 (permalink)
Richard Crofts THE STICK Join Date: Feb 2003 Location: Worcestershire WR15 Local Time: 10:07 PM Posts: 3,261 Offline	SA is hardly 3rd world removal of the cat is good for a chunck of torque and few BHP. Not masses as the stock manifold is pretty naff but you will see some 'feelable' change

Aug 10th, 2007, 03:39 PM	#3 (permalink)
flatland69 MINI2 Newbie Join Date: Jul 2007 Local Time: 12:07 AM Posts: 46 Offline	I know, SA's cool, I'm just being dramatic... lol. So think if I do the manifold too it'll be really noticable? I'm looking to do an induction kit, exhaust, cat removal, cams...can't wait!

Aug 10th, 2007, 03:44 PM	#4 (permalink)
Bhozar Overly excited!! My Classifieds Join Date: Aug 2006 Location: Worcestershire Local Time: 10:07 PM Posts: 1,280 Offline	Quote: Originally Posted by flatland69 (original) I know, SA's cool, I'm just being dramatic... lol. So think if I do the manifold too it'll be really noticable? I'm looking to do an induction kit, exhaust, cat removal, cams...can't wait! I would suggest getting a manifold with a removable cat/de-cat pipe. If you can tolerate the extra noise along with an exhaust.

Aug 10th, 2007, 04:15 PM	#5 (permalink)
flatland69 MINI2 Newbie Join Date: Jul 2007 Local Time: 12:07 AM Posts: 46 Offline	Hmm i think I might just do that...there's some pretty cheap ones on ebay! Does the standard Mini exhaust have 1 or 2 mufflers on it?

Aug 10th, 2007, 04:18 PM	#6 (permalink)
Bhozar Overly excited!! My Classifieds Join Date: Aug 2006 Location: Worcestershire Local Time: 10:07 PM Posts: 1,280 Offline	Quote: Originally Posted by flatland69 (original) Hmm i think I might just do that...there's some pretty cheap ones on ebay! Does the standard Mini exhaust have 1 or 2 mufflers on it? It has two in line at the back of the car. More power can be gained if you one-ball it. You can see the GTT pipe that shows how its done. It just cuts one of them out and replaces it with one bend, rather than several. Not sure if there is a central resenator on the stock MCS exhaust. There is on my JCW exhaust.

Aug 10th, 2007, 04:26 PM	#7 (permalink)
flatland69 MINI2 Newbie Join Date: Jul 2007 Local Time: 12:07 AM Posts: 46 Offline	is that for a non-s? I have a normal cooper...

Aug 10th, 2007, 04:42 PM	#8 (permalink)
Bhozar Overly excited!! My Classifieds Join Date: Aug 2006 Location: Worcestershire Local Time: 10:07 PM Posts: 1,280 Offline	Quote: Originally Posted by flatland69 (original) is that for a non-s? I have a normal cooper... Sorry, I have an S. I cant remember how the exhaust was setup on my Cooper.

Aug 10th, 2007, 08:17 PM	#9 (permalink)
flatland69 MINI2 Newbie Join Date: Jul 2007 Local Time: 12:07 AM Posts: 46 Offline	ok...thanks for the help!

Aug 11th, 2007, 02:40 PM	#10 (permalink)
Mini4000 MINI2 Regular Join Date: Jan 2004 Location: antwerpen Local Time: 11:07 PM Posts: 51 Offline	Quote: Originally Posted by flatland69 (original) ok...thanks for the help! i assume u will be heading towards 180 to 190 NM (torque ) with a reflash of your ecu and better flowing aftermarket exhaust system (f.ex a la Supersprint, miltek, alta, ....) a friend of mine had the SS full exhaust system with metalic cat. converter and with reflash of ecu, was putting down +- 180 NM.... without CAT should be more NM , and loads more FUN....hehe... pop burble pop.... even with a COOPER..... but grote broer koekeloer will be hearing u ....

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Aug 12th, 2007, 09:38 PM	#11 (permalink)
flatland69 MINI2 Newbie Join Date: Jul 2007 Local Time: 12:07 AM Posts: 46 Offline	Wow, that much? Nice..can't wait. It's going to be hard getting an aftermarket exhaust in SA though. Yeah it'll be NOISY, but it's a good thing in a way!

Aug 13th, 2007, 11:24 AM	#12 (permalink)
Richard Crofts THE STICK Join Date: Feb 2003 Location: Worcestershire WR15 Local Time: 10:07 PM Posts: 3,261 Offline	Centre muffler (on the straight pipe) and then a 1 can rear box muffler section on the rear of the cooper if I rememeber right.