BMW Performance Exhaust (N52) owners

Drawn05 · 08-02-2011, 06:08 AM

I have had my Performance Muffler on my 125 for about 5 months and up until now I have not had much luck with the drone settling down.

The PE doesn't come with a vibration absorber and most of us that have one just transfer over the stock vibration absorber. The 125/130 and 135 muffler vibration absorber is rated at 32hz so I thought I might see if BMW uses different rated versions. I bought a few different absorbers online, got them in the mail today and just tested them out tonight.

123d - 28hz - I thought this would cancel out the drone as it has a lower hz rating and the drone is quite a low pitch. It sounds better than the stock one, but still the drone is horrible.

E86 Z4 30is - 83hz - I didnt think this would be what I was looking for and I thought it might just cancel out the sounds of the exhaust I want to keep BUT this is the shit. It does mute some of the sound at 4500-6500rpm but its now so quiet at 2500-3000rpm that its unbelievable. The spluttering/burbling on deceleration is still there which is great.

The Z4/123d version is also quite small compared to the stock 125/130/135 ones

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Name: vibra.jpg
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Size: 331.1 KB

The part number is 18103412864 and it cost me $35.

jksgoh · 08-02-2011, 06:25 AM

good work mate.
Although, I'm not too fused with the drone at the moment i would like to give this a shot and see what effect it has.

Where abouts did you source the parts from?

Drawn05 · 08-02-2011, 06:49 AM

Genuine Parts GMBH, but you can get them from tischer, united etc.

08-02-2011, 06:08 AM	#1
Drawn05 Captain 67 Rep 853 Posts Drives: Yes Join Date: Dec 2010 Location: Left iTrader: (0)	BMW Performance Exhaust (N52) owners I have had my Performance Muffler on my 125 for about 5 months and up until now I have not had much luck with the drone settling down. The PE doesn't come with a vibration absorber and most of us that have one just transfer over the stock vibration absorber. The 125/130 and 135 muffler vibration absorber is rated at 32hz so I thought I might see if BMW uses different rated versions. I bought a few different absorbers online, got them in the mail today and just tested them out tonight. 123d - 28hz - I thought this would cancel out the drone as it has a lower hz rating and the drone is quite a low pitch. It sounds better than the stock one, but still the drone is horrible. E86 Z4 30is - 83hz - I didnt think this would be what I was looking for and I thought it might just cancel out the sounds of the exhaust I want to keep BUT this is the shit. It does mute some of the sound at 4500-6500rpm but its now so quiet at 2500-3000rpm that its unbelievable. The spluttering/burbling on deceleration is still there which is great. The Z4/123d version is also quite small compared to the stock 125/130/135 ones The part number is 18103412864 and it cost me $35.
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08-02-2011, 06:25 AM	#2
jksgoh Major 141 Rep 1,448 Posts Drives: M2 Join Date: Oct 2008 Location: Melb, Vic, Aus iTrader: (0) Garage List 2008 E82 125i [0.00]	good work mate. Although, I'm not too fused with the drone at the moment i would like to give this a shot and see what effect it has. Where abouts did you source the parts from?
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08-02-2011, 06:49 AM	#3
Drawn05 Captain 67 Rep 853 Posts Drives: Yes Join Date: Dec 2010 Location: Left iTrader: (0)	Genuine Parts GMBH, but you can get them from tischer, united etc.
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