X pipe help

avsbmw · 11-03-2011, 09:03 AM

I have been searching a lot of threads but can not find the answer I am looking for. I am thinking about getting different mufflers but can not decided if I want to get the X pipe as well.

Has anyone who had different mufflers later installed x pipe? How did it change the sound? Do you get more rasp? Notice any power increase?

If there is already a thread about this that I can not find can some one please post it?

Thanks!

just2talented · 11-03-2011, 07:27 PM

i cant find one, id also like to know the benefits between the x-pipe and getting the resonator cut out.

BTM · 11-03-2011, 10:03 PM

Here is one about the RE Xpipe that might help - http://www.zpost.com/forums/showthre...highlight=pipe

jason432 · 11-04-2011, 10:04 AM

I just installed the SS X-pipe and previously had installed the SS Sport (Race) cans... the X-pipe added more sound, mostly more bass in the form of a deeper sound. Also, didn't notice much sound difference on the top end. Down low and mid range rpm's are noticeably different. I did NOT notice any power increase, I'm pretty sure no one ever could just from a drive. Maybe picked up a few HP from the free flowing design, but you'll never notice it unless its on a dyno. I noticed I'm in your area, if you want to hear my set-up sometime I'd be happy to meet you out and let you check it out.

Beedub · 11-04-2011, 12:45 PM

rpi said to me that they never made an xpipe for our cars as the stock unit was so good, after taking mine off to replace it with the SS unit i had to agree the stock xpipe is a really nice piece imo...... not worth replacing.

BTM · 11-04-2011, 03:16 PM

Sound and lighter weight is about all you'll get out of it. The stock piece is resonated and quite heavy. I can weigh mine if anyone wants to know. In general, BMW intakes and exhaust are very well designed. All things equal (ie - stock) there are minimal gains to be had, if any.

gatorfast · 11-04-2011, 05:29 PM

How much of a sound difference, volume wise, did you all notice after replacing the x-pipe? Was there a definitive increase in volume or not so much?

BTM · 11-04-2011, 07:10 PM

I replaced the xpipe and mufflers at the same time, so can't comment. Also, my secondary cats are gutted which on the stock exhaust increased volume noticeably...so I can't really comment even if I were to put my stock stuff back on

11-03-2011, 09:03 AM	#1
avsbmw Captain 21 Rep 844 Posts Drives: 07 Z4MC Join Date: Jul 2009 Location: Hampton Roads VA iTrader: (1)	X pipe help I have been searching a lot of threads but can not find the answer I am looking for. I am thinking about getting different mufflers but can not decided if I want to get the X pipe as well. Has anyone who had different mufflers later installed x pipe? How did it change the sound? Do you get more rasp? Notice any power increase? If there is already a thread about this that I can not find can some one please post it? Thanks!
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11-03-2011, 07:27 PM	#2
just2talented Private First Class 12 Rep 185 Posts Drives: Alpine ///M roadster Join Date: May 2009 Location: Queens NY iTrader: (0)	i cant find one, id also like to know the benefits between the x-pipe and getting the resonator cut out.
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11-03-2011, 10:03 PM	#3
BTM Banned 480 Rep 10,309 Posts Drives: A///MERICAN!!! Join Date: Mar 2010 Location: A///MERICA!!! iTrader: (11) Garage List 2007 BMW Z4 M Coupe [7.20]	Here is one about the RE Xpipe that might help - http://www.zpost.com/forums/showthre...highlight=pipe
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11-04-2011, 10:04 AM	#4
jason432 Private 4 Rep 52 Posts Drives: 2004 ZHP Sedan Join Date: Jan 2011 Location: 757, Virginia iTrader: (0)	I just installed the SS X-pipe and previously had installed the SS Sport (Race) cans... the X-pipe added more sound, mostly more bass in the form of a deeper sound. Also, didn't notice much sound difference on the top end. Down low and mid range rpm's are noticeably different. I did NOT notice any power increase, I'm pretty sure no one ever could just from a drive. Maybe picked up a few HP from the free flowing design, but you'll never notice it unless its on a dyno. I noticed I'm in your area, if you want to hear my set-up sometime I'd be happy to meet you out and let you check it out.
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11-04-2011, 12:45 PM	#5
Beedub Major General 423 Rep 5,327 Posts Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK iTrader: (0)	rpi said to me that they never made an xpipe for our cars as the stock unit was so good, after taking mine off to replace it with the SS unit i had to agree the stock xpipe is a really nice piece imo...... not worth replacing. __________________ Z4MR VT2 - Clubsport build. Multi award winning Detailing \| Wrap \| PPF specialists UK based - www.topwrapz.com Last edited by Beedub; 11-04-2011 at 06:07 PM..
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11-04-2011, 03:16 PM	#6
BTM Banned 480 Rep 10,309 Posts Drives: A///MERICAN!!! Join Date: Mar 2010 Location: A///MERICA!!! iTrader: (11) Garage List 2007 BMW Z4 M Coupe [7.20]	Sound and lighter weight is about all you'll get out of it. The stock piece is resonated and quite heavy. I can weigh mine if anyone wants to know. In general, BMW intakes and exhaust are very well designed. All things equal (ie - stock) there are minimal gains to be had, if any.
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11-04-2011, 05:29 PM	#7
gatorfast Major General 4992 Rep 6,859 Posts Drives: 718 Cayman Join Date: Jan 2008 Location: SoFla iTrader: (4)	How much of a sound difference, volume wise, did you all notice after replacing the x-pipe? Was there a definitive increase in volume or not so much?
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11-04-2011, 07:10 PM	#8
BTM Banned 480 Rep 10,309 Posts Drives: A///MERICAN!!! Join Date: Mar 2010 Location: A///MERICA!!! iTrader: (11) Garage List 2007 BMW Z4 M Coupe [7.20]	I replaced the xpipe and mufflers at the same time, so can't comment. Also, my secondary cats are gutted which on the stock exhaust increased volume noticeably...so I can't really comment even if I were to put my stock stuff back on
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