Removing Mid Box of exhaust

popey · 10th May 2009, 02:32 PM

I'm thinking of removing the middle section of my exhaust for a straight through pipe, much like the challenge system.

Can anyone see any problems such as warning light on the dash etc?

(as far as I know there is no sensor in the mid box)

popey · 10th May 2009, 02:41 PM

Here is a pic, its part 1 that will be removed (the other system is US spec).

Ant · 10th May 2009, 02:51 PM

personally i would'nt as i think the resonator will make a huge difference to BOOM in the car when driving on the motroway etc.

However

I am going to say, yes remove it, because if it sounds good on yours then i'll do the same....lol But in car noise may be too much

popey · 10th May 2009, 03:35 PM

Thanks for the input.

I'm going to make sure that the "operation" can be reversed if there are any negative effects.

I just hope that most of the noise comes out of the back.

jamski · 10th May 2009, 04:07 PM

Well me and a lot of others have the PlayMini cat back system, with a straight through mid section, which is purely a pipe, so removes the front muffler. I can't really tell a difference in the car. You can hear the back box making a lovely burble, but nothing more.

Why not change the back box while your at it??!

popey · 10th May 2009, 08:27 PM

Quote:

Originally Posted by jamski

Well me and a lot of others have the PlayMini cat back system, with a straight through mid section, which is purely a pipe, so removes the front muffler. I can't really tell a difference in the car. You can hear the back box making a lovely burble, but nothing more.

Why not change the back box while your at it??!

Im doing it one step at a time, the factory JCW sounds good as it is, Im just been greedy.

jamski · 10th May 2009, 09:25 PM

Quote:

Originally Posted by popey

Im doing it one step at a time, the factory JCW sounds good as it is, Im just been greedy.

Ah ok, so you already have the JCW kit??!!

richard · 10th May 2009, 10:04 PM

The car does become raspy sounding rather than boomy.

As sensors go you will have no problems what so ever, the last sensor is just after the cat so your fine there. I will also be removing mine one day when I have some spare time (mines a R53 though) - you can do it with straight section.

neilobe · 10th May 2009, 10:14 PM

Are there any sensors after the cat back part, i thought they were only on the downpipe ?

popey · 11th May 2009, 05:00 AM

Quote:

Originally Posted by jamski

Ah ok, so you already have the JCW kit??!!

Ive got a Factory JCW.

Thanks for all the input, I will let you know how it sounds

10th May 2009, 02:32 PM	#1 (permalink)
popey Team Coastal Racing Join Date: Apr 2009 Location: Blackpool Posts: 1,096 Thanks: 237 Thanked 161 Times in 127 Posts	Removing Mid Box of exhaust I'm thinking of removing the middle section of my exhaust for a straight through pipe, much like the challenge system. Can anyone see any problems such as warning light on the dash etc? (as far as I know there is no sensor in the mid box) __________________ [SIGPIC][/SIGPIC]

10th May 2009, 02:41 PM	#2 (permalink)
popey Team Coastal Racing Join Date: Apr 2009 Location: Blackpool Posts: 1,096 Thanks: 237 Thanked 161 Times in 127 Posts	Here is a pic, its part 1 that will be removed (the other system is US spec). __________________ [SIGPIC][/SIGPIC]

10th May 2009, 03:35 PM	#4 (permalink)
popey Team Coastal Racing Join Date: Apr 2009 Location: Blackpool Posts: 1,096 Thanks: 237 Thanked 161 Times in 127 Posts	Thanks for the input. I'm going to make sure that the "operation" can be reversed if there are any negative effects. I just hope that most of the noise comes out of the back. __________________ [SIGPIC][/SIGPIC]

10th May 2009, 04:07 PM	#5 (permalink)
jamski James - AKA Cuddle Monkey Join Date: Apr 2009 Location: Surrey Posts: 3,053 Thanks: 344 Thanked 269 Times in 216 Posts	Well me and a lot of others have the PlayMini cat back system, with a straight through mid section, which is purely a pipe, so removes the front muffler. I can't really tell a difference in the car. You can hear the back box making a lovely burble, but nothing more. Why not change the back box while your at it??! __________________ Jack the Black Cooper - 121.8bhp - CB001 - Maximum Repper My Tumblr Surrey New Mini Club My Flickr

10th May 2009, 10:04 PM	#8 (permalink)
richard Banned Join Date: Apr 2009 Location: Solihull, West Midlands Posts: 886 Thanks: 12 Thanked 169 Times in 157 Posts	The car does become raspy sounding rather than boomy. As sensors go you will have no problems what so ever, the last sensor is just after the cat so your fine there. I will also be removing mine one day when I have some spare time (mines a R53 though) - you can do it with straight section. Last edited by richard; 10th May 2009 at 10:06 PM.

10th May 2009, 02:51 PM	#3 (permalink)
Ant Total Member Join Date: Apr 2009 Posts: 234 Thanks: 7 Thanked 41 Times in 27 Posts	personally i would'nt as i think the resonator will make a huge difference to BOOM in the car when driving on the motroway etc. However I am going to say, yes remove it, because if it sounds good on yours then i'll do the same....lol But in car noise may be too much

10th May 2009, 10:14 PM	#9 (permalink)
neilobe Total Member Join Date: May 2009 Location: herts Posts: 344 Thanks: 22 Thanked 37 Times in 31 Posts	Are there any sensors after the cat back part, i thought they were only on the downpipe ?

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