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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > E90 Resonator Delete / X-pipe install



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      08-28-2015, 08:07 PM   #23
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Quote:
Originally Posted by Secret_Squirrel View Post
[u2b][/u2b]

quick video with stock downpipes
No other exhaust mod except "X-pipe"?
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      08-29-2015, 08:59 AM   #24
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Here's the x-pipe I bought a few days ago. . http://m.ebay.com/itm/UNIVERSAL-STAI...d=606164735021
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      08-29-2015, 03:07 PM   #25
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Quote:
Originally Posted by techwhiz View Post
No other exhaust mod except "X-pipe"?
thats correct. no other mods.
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      08-30-2015, 03:25 PM   #26
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I got my x-pipe from the link I posted above. Ordered Thursday received yesterday. Hope to get it installed this week.
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      08-30-2015, 11:51 PM   #27
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Quote:
Originally Posted by Secret_Squirrel View Post
thats correct. no other mods.
I ordered an X-Pipe yesterday.
That's plenty noise for me.
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      08-30-2015, 11:53 PM   #28
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I did resonator and muffler delete, then xpipe and straight back to the tips. Love the sound
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      09-04-2015, 07:14 AM   #29
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Originally Posted by techwhiz View Post
I ordered an X-Pipe yesterday.
That's plenty noise for me.
Did you get it installed yet? If so, what are your thoughts?
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      09-05-2015, 09:46 AM   #30
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I just got my x-pipe installed. It makes the car a little louder but nothing crazy.
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      09-06-2015, 12:45 AM   #31
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dci xpipe and vrsf dp's are great. ..but they'll leave you thirsty.. that's me right now
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      06-26-2016, 11:26 PM   #32
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Quote:
Originally Posted by stephen335xi View Post
I did resonator and muffler delete, then xpipe and straight back to the tips. Love the sound
I did a resonator and muffler delete. Looking to put an xpipe but I don't know if the exhaust will sound cleaner
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      07-22-2016, 10:25 PM   #33
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I've read a few other older threads about resonator deletes and/or secondary cat deletes. From what I found it sounds like the most mild/subtle change to more aggressive goes like this (assuming everything else in exhaust is stock, of course with downpipes each option would be louder):

replace resonator with x pipe (little/no drone) < replace resonator with two straight pipes (louder maybe a little/moderate drone?)< replace secondary cats with xpipe (little/no drone but louder than prior options)

Also sounds like leaving the stock resonator reduces Drone but if you remove secondary cats and replace with straight pipe or x pipe would be louder more aggressive vs doing the same with the resonator but less drone?

can anyone confirm or Deny what i listed above? I'm revisiting doing one of the above again but don't want to go the trial and error route if possible.
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      07-29-2016, 08:28 PM   #34
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catless dp, 2nd cats, xpipe, vibrant res, muff delete, mhd burble, dewhel bov, bms dci, and NO rattle fix. mild drone at 70mph but totally bearable.
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      11-02-2016, 06:42 PM   #35
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I know the last post was a few months ago. I just bought an exhaust last weekend that has the PE mod. Difference in my case is minimal at idle however it's definitely a deep tone and a little louder than my stock one. With that said, I still wanted it a little louder but nothing obnoxious. I've heard the PE mod on a lot of coupes and it's louder than mine and sounds really good and I know the e92's have the x pipe where e90's have a resonator instead.

I've been searching a lot and saw where people replaced the resonator with an aftermarket x pipe and just purchased one that is 2.25" at each inlet/outlet. I've seen some people use 2.5" and I believe some used 2.25". I thought the factory exhaust was 2.25"? Will this work or does anyone think there would be a noticeable difference between using one that is 2.25" vs 2.5" ?

What size did everyone use here?
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      11-02-2016, 07:55 PM   #36
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2.25 fit perfect
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      11-03-2016, 10:36 AM   #37
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+1 for 2nd cat delete +x-pipe
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      11-03-2016, 07:44 PM   #38
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I want to make sure it still has a deep tone and not raspy. I figured the x pipe is the first step, see how that sounds, if I want more could always delete the 2nd cat's from there. unless leaving the resonator and replacing 2nd cats with an x pipe would be better? I feel like leavin cats in help avoid having the rasp or bad tones of the exhaust sound.
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      07-18-2021, 09:34 PM   #39
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Quote:
Originally Posted by SeanS54 View Post
I left the 2nd cats on mine, removed the resonator and added an X-pipe, and did the exhaust PE mod.

Sounds a little louder than stock but absolutely no drone.
Got clips of it ?
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