X pipe in this location

2one3E90 · 06-15-2021, 06:46 PM

What happens if I put a X pipe right before the resonator? Does a Xpipe change the sound of it and what tone does a Xpipe bring out? Will i get benefit with scavenging or a more higher pitch tone?

jwalker87 · 06-16-2021, 10:04 AM

I believe that the factory resonator already has a crossover (either H- or X-pipe equivalent), so I doubt adding another one upstream of that would really do anything.

A popular part of the "PE Mod" is replacing the resonator with an x-pipe - I've done this (in addition to sleeving of the perforated inner-muffler pipes as well as catless DPs) and absolutely love the sound.

EDIT: Just realized this is not for a 335i - not sure if any of this still applies, but I'll leave it here ...

2one3E90 · 06-16-2021, 10:23 AM

Quote:

Originally Posted by jwalker87

I believe that the factory resonator already has a crossover (either H- or X-pipe equivalent), so I doubt adding another one upstream of that would really do anything.

A popular part of the "PE Mod" is replacing the resonator with an x-pipe - I've done this (in addition to sleeving of the perforated inner-muffler pipes as well as catless DPs) and absolutely love the sound.

EDIT: Just realized this is not for a 335i - not sure if any of this still applies, but I'll leave it here ...

r u on cca forums to

neilvan · 06-16-2021, 10:35 AM

An X-pipe will pretty much do nothing; The factory resonator is a Y due to it being a 2-1 collector basically.

That being said if you added a X-pipe it'll likely make the system quieter due to the reduction of exhaust velocity and any tone change wont be noticed as it'll be too quiet

2one3E90 · 06-16-2021, 10:38 AM

Quote:

Originally Posted by neilvan

An X-pipe will pretty much do nothing; The factory resonator is a Y due to it being a 2-1 collector basically.

That being said if you added a X-pipe it'll likely make the system quieter due to the reduction of exhaust velocity and any tone change wont be noticed as it'll be too quiet

I actually do want it quieter because i have no muffler. I need to make my car louder cuz in track i cant here anytning. I have supersprints, stock resonator only. Now its to drony. Im thinking a xpipe should help?

neilvan · 06-16-2021, 10:40 AM

It will not help with that at all. If you have a muffler delete and want it quieter; then you need to add a muffler(doesn't have to be stock)

lookalikehuuh · 06-16-2021, 10:45 AM

Quote:

Originally Posted by 2one3E90

I actually do want it quieter because i have no muffler. I need to make my car louder cuz in track i cant here anytning. I have supersprints, stock resonator only. Now its to drony. Im thinking a xpipe should help?

You know what would be a huge help here? A muffler

06-15-2021, 06:46 PM	#1
2one3E90 Lieutenant Colonel 2422 Rep 1,770 Posts Drives: Bmw 330i and Bmw 328i Join Date: Dec 2020 Location: Los Angeles iTrader: (0) Garage List 2010 BMW 328i [10.00] 2004 BMW Z4 [9.67] 2006 BMW 330i [10.00]	X pipe in this location What happens if I put a X pipe right before the resonator? Does a Xpipe change the sound of it and what tone does a Xpipe bring out? Will i get benefit with scavenging or a more higher pitch tone? Attached Images
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06-16-2021, 10:04 AM	#2
jwalker87 Major 319 Rep 1,023 Posts Drives: '08 335i, '11 335xi, '01 Z3M Join Date: Jul 2010 Location: Pittsburgh, PA iTrader: (2)	I believe that the factory resonator already has a crossover (either H- or X-pipe equivalent), so I doubt adding another one upstream of that would really do anything. A popular part of the "PE Mod" is replacing the resonator with an x-pipe - I've done this (in addition to sleeving of the perforated inner-muffler pipes as well as catless DPs) and absolutely love the sound. EDIT: Just realized this is not for a 335i - not sure if any of this still applies, but I'll leave it here ... __________________ 2001 e36/7 M Roadster 5spd 2008 e90 335i 6spd 2011 e90 335xi 6spd 2011 e70 x5 diesel 2010 Ducati Monster 696
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06-16-2021, 10:35 AM	#4
neilvan Major 858 Rep 1,363 Posts Drives: 09 E90 335i M-Sport 6MT RWD Join Date: Nov 2017 Location: Ontario, Canada iTrader: (0) Garage List 2007 BMW E61 530xi [0.00] 1993 Mazda Miata [0.00] 2009 BMW E90 335i [0.00]	An X-pipe will pretty much do nothing; The factory resonator is a Y due to it being a 2-1 collector basically. That being said if you added a X-pipe it'll likely make the system quieter due to the reduction of exhaust velocity and any tone change wont be noticed as it'll be too quiet
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06-16-2021, 10:40 AM	#6
neilvan Major 858 Rep 1,363 Posts Drives: 09 E90 335i M-Sport 6MT RWD Join Date: Nov 2017 Location: Ontario, Canada iTrader: (0) Garage List 2007 BMW E61 530xi [0.00] 1993 Mazda Miata [0.00] 2009 BMW E90 335i [0.00]	It will not help with that at all. If you have a muffler delete and want it quieter; then you need to add a muffler(doesn't have to be stock)
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