Anyone have a secondary cat delete with BMW PE?

kamek · 10-06-2010, 06:56 PM

Anyone with a secondary cat delete and BMW PE: can you PLEASE make a video of how it sounds? I'm dying to get my BMW PE to sound a little louder, but I want to see how much the secondary cat delete will affect the sound.

Here's my video with just the full BMW PE system:

[u2b]T5x9EMFts98?fs=1&hl=en_US&rel=0&hd=1[/u2b]

brocklanders · 10-06-2010, 07:49 PM

is my 06 325i different or am i just ignorant, i looked under my car and saw two cats but there were two pipes coming off the exhaust manifold. other then that there was only a resonator and a muffler. where would the secondary cat be?

superduty · 10-06-2010, 08:52 PM

All N52s have cats in the exhaust manifolds. The ULEV N52s have the added underbody (secondary) cats. Not 100% which year ULEV started but it had to have been 2007 or 2008.

Quote:

Originally Posted by brocklanders

is my 06 325i different or am i just ignorant, i looked under my car and saw two cats but there were two pipes coming off the exhaust manifold. other then that there was only a resonator and a muffler. where would the secondary cat be?

c_jeong89 · 10-06-2010, 09:07 PM

been meaning to get vids up but i just haven't found the time or place lol. i could get a vid of some revs but not sure how much that would help, just something quick and easy i can do in the driveway lol

LaLakers91tc · 10-06-2010, 09:12 PM

Quote:

Originally Posted by brocklanders

is my 06 325i different or am i just ignorant, i looked under my car and saw two cats but there were two pipes coming off the exhaust manifold. other then that there was only a resonator and a muffler. where would the secondary cat be?

there are cats right at the exhaust manifold, which are crammed up in the compartment behind the engine on the headers, which are only visible when you lift the car, and then there is another set a couple feet before the resonator that are the easy to see ones and the ones op is talking about deleting

brocklanders · 10-06-2010, 09:16 PM

thanks, i thought they were kinda small.

kamek · 10-07-2010, 07:13 PM

c_jeong89 make a video!!

c_jeong89 · 10-09-2010, 06:30 PM

Here's a quick video I did just to have something. Sorry about that whistling in the background don't really know where it was coming from. It's just slightly deeper/louder with the secondaries gone. Better to hear it in person but this is the best I can do for now.

mikeokimster · 10-09-2010, 07:23 PM

Is it significanty louder on a cold start compared with just the PE setup?

c_jeong89 · 10-09-2010, 07:45 PM

Quote:

Originally Posted by mikeokimster

Is it significanty louder on a cold start compared with just the PE setup?

i would say so. that vid was when the car was warm but on cold starts it is pretty loud lol.

kamek · 10-10-2010, 11:14 AM

Thank you!! Can't wait to see any other vids if you make them. Your warmed up exhaust idling sounds like a cold BMW PE idling.

TommyK · 10-10-2010, 01:25 PM

Quote:

Originally Posted by c_jeong89

i would say so. that vid was when the car was warm but on cold starts it is pretty loud lol.

lol ya much louder, reminded me a little bit of my muffler delete

kamek · 10-19-2010, 12:02 AM

c_jeong -- with the secondary cat delete, did you lose any of the "gurgle" and "pop" that's so beautiful on the stock system?

c_jeong89 · 10-19-2010, 10:35 PM

nope i can hear it perfectly. even with all the windows up i heard it gurgle when i let go of the gas or shift down. I did have the radio off though lol. i'll try to get more vids later, got midterms right now and there has been some shitty weather here.

kamek · 10-20-2010, 12:49 AM

Quote:

Originally Posted by c_jeong89

nope i can hear it perfectly. even with all the windows up i heard it gurgle when i let go of the gas or shift down. I did have the radio off though lol. i'll try to get more vids later, got midterms right now and there has been some shitty weather here.

I feel you on those midterms! I was bombarded with them this week too...

10-06-2010, 06:56 PM	#1
kamek Brigadier General 358 Rep 3,447 Posts Drives: 2018 X3 M40i Join Date: Mar 2008 Location: Queens, NY iTrader: (4) Garage List 2008 BMW 328xi [8.20]	Anyone have a secondary cat delete with BMW PE? Anyone with a secondary cat delete and BMW PE: can you PLEASE make a video of how it sounds? I'm dying to get my BMW PE to sound a little louder, but I want to see how much the secondary cat delete will affect the sound. Here's my video with just the full BMW PE system: [u2b]T5x9EMFts98?fs=1&hl=en_US&rel=0&hd=1[/u2b]
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10-06-2010, 07:49 PM	#2
brocklanders Major 106 Rep 1,428 Posts Drives: the uno, mineral white Join Date: Mar 2010 Location: houston iTrader: (3) Garage List 06 325 [0.00]	is my 06 325i different or am i just ignorant, i looked under my car and saw two cats but there were two pipes coming off the exhaust manifold. other then that there was only a resonator and a muffler. where would the secondary cat be?
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10-06-2010, 09:07 PM	#4
c_jeong89 Banned 85 Rep 2,097 Posts Drives: E90 TiAg Join Date: Feb 2009 Location: Irvine/Bay Area iTrader: (16)	been meaning to get vids up but i just haven't found the time or place lol. i could get a vid of some revs but not sure how much that would help, just something quick and easy i can do in the driveway lol
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10-06-2010, 09:16 PM	#6
brocklanders Major 106 Rep 1,428 Posts Drives: the uno, mineral white Join Date: Mar 2010 Location: houston iTrader: (3) Garage List 06 325 [0.00]	thanks, i thought they were kinda small.
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10-07-2010, 07:13 PM	#7
kamek Brigadier General 358 Rep 3,447 Posts Drives: 2018 X3 M40i Join Date: Mar 2008 Location: Queens, NY iTrader: (4) Garage List 2008 BMW 328xi [8.20]	c_jeong89 make a video!!
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10-09-2010, 06:30 PM	#8
c_jeong89 Banned 85 Rep 2,097 Posts Drives: E90 TiAg Join Date: Feb 2009 Location: Irvine/Bay Area iTrader: (16)	Here's a quick video I did just to have something. Sorry about that whistling in the background don't really know where it was coming from. It's just slightly deeper/louder with the secondaries gone. Better to hear it in person but this is the best I can do for now.
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10-09-2010, 07:23 PM	#9
mikeokimster Lieutenant Colonel 205 Rep 1,699 Posts Drives: e90 jerez m3 Join Date: Sep 2005 Location: North Seattle, WA iTrader: (10)	Is it significanty louder on a cold start compared with just the PE setup? __________________ Current: 10' E90 Jerez M3 DCT ///Mods: Xpel front clip wrap, Nokya 2500k H8 halos, matte grills, IND reflectors, scoops, MS drop-in, MS track pipes, Dinan exhaust, 240E, ESS tune, BBS CHR, s04 255x35 295x30, KW Clubsports, ceramic pads Retired: 08' E92 328i JB 6mt 212 rwhp 190 rwtq
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10-10-2010, 11:14 AM	#11
kamek Brigadier General 358 Rep 3,447 Posts Drives: 2018 X3 M40i Join Date: Mar 2008 Location: Queens, NY iTrader: (4) Garage List 2008 BMW 328xi [8.20]	Thank you!! Can't wait to see any other vids if you make them. Your warmed up exhaust idling sounds like a cold BMW PE idling.
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10-19-2010, 12:02 AM	#13
kamek Brigadier General 358 Rep 3,447 Posts Drives: 2018 X3 M40i Join Date: Mar 2008 Location: Queens, NY iTrader: (4) Garage List 2008 BMW 328xi [8.20]	c_jeong -- with the secondary cat delete, did you lose any of the "gurgle" and "pop" that's so beautiful on the stock system?
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10-19-2010, 10:35 PM	#14
c_jeong89 Banned 85 Rep 2,097 Posts Drives: E90 TiAg Join Date: Feb 2009 Location: Irvine/Bay Area iTrader: (16)	nope i can hear it perfectly. even with all the windows up i heard it gurgle when i let go of the gas or shift down. I did have the radio off though lol. i'll try to get more vids later, got midterms right now and there has been some shitty weather here.
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