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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > BMW PE



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      02-21-2013, 08:13 PM   #1
dpilat8588
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BMW PE

So I just bought the BMW PE for my 328. I have heard there is a "break in" period for this exhaust. Is this true? What can I expect to feel/hear as the exhaust breaks in. Also, how long does the break in period last?
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      02-21-2013, 08:24 PM   #2
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for my 128i PE, the exhaust definitely softened up after a month or two, wish it didn't, but I'm satisfied with the sound now. Any kind of PE is a must if you appreciate the i6 sound.
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      02-21-2013, 09:26 PM   #3
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i've read different results on here, but mine took about a 1000 miles. Congrats on the purchase. You're gonna like it. It's definitely a must mod for our N52's
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      02-21-2013, 10:12 PM   #4
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Are the PE exhausts packed? Because if they aren't I honestly don't see how this change isn't a placebo effect.
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      02-21-2013, 10:33 PM   #5
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Quote:
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Are the PE exhausts packed? Because if they aren't I honestly don't see how this change isn't a placebo effect.
Are you referring to the "break in period" being a placebo effect or the PE itself being a placebo?
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      02-21-2013, 10:40 PM   #6
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If anything I feel like mine got louder over time.. but that might just be me.... and i took out my secondary cats so it got louder due to that too.. i think ive read that other people's have gotten a little louder also
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      02-21-2013, 10:43 PM   #7
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Quote:
Originally Posted by mauibuilt_328 View Post
Are you referring to the "break in period" being a placebo effect or the PE itself being a placebo?
I'm referring to any "change in sound". I could see it if it was a packed muffler, but if it isn't, I don't see how that would happen.
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      02-21-2013, 11:32 PM   #8
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Quote:
Originally Posted by Johnny D View Post
I'm referring to any "change in sound". I could see it if it was a packed muffler, but if it isn't, I don't see how that would happen.
It is packed, thats why you have the break-in period.
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      02-21-2013, 11:50 PM   #9
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There's definitely a break-in period. About the time you throw in some catless headers you should hear a very sharp amplification in sound





But no, there really isn't a break-in imo.
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      02-22-2013, 12:22 AM   #10
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Quote:
Originally Posted by Volasko View Post
It is packed, thats why you have the break-in period.
Thanks for confirming that it is a packed muffler.
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      02-22-2013, 12:38 AM   #11
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Is there any drone in this setup? In comparison to magnaflow's?
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      02-22-2013, 05:30 AM   #12
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hardly any drone if any
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      02-22-2013, 09:28 AM   #13
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I didnt notice really any difference with mine, Its just as loud 6k miles as the day it was installed.
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      02-22-2013, 02:14 PM   #14
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Quote:
Originally Posted by Taran.J View Post
Is there any drone in this setup? In comparison to magnaflow's?
No drone here

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Originally Posted by benzo23 View Post
I didnt notice really any difference with mine, Its just as loud 6k miles as the day it was installed.
I guess everyone had a different experience with it. I remember being disappointed the day i got it installed lol
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      02-22-2013, 03:04 PM   #15
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what do they pack it with?
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      02-22-2013, 03:27 PM   #16
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Quote:
Originally Posted by mauibuilt_328 View Post
No drone here


I guess everyone had a different experience with it. I remember being disappointed the day i got it installed lol
Shit not me I was thrilled that it was just louder then stock lol. I guess im just use to it by now tho.
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      02-22-2013, 04:13 PM   #17
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mine made a huge difference to sound over stock. I love it. Just this morning I had to stand and listen to the misses drive off...it was like sex to my ears.
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