Sound Generator Modification

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philipw
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Re: Sound Generator Modification

Post by philipw » Sun Jul 26, 2015 8:54 pm

Out of curiosity, do any of you actually drive with both pieces of foam removed?

I tried it with both pieces removed and the noise was biblical, actually hurt my ears :lol:


[youtube]lQLrZYf7yig[/youtube]

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Re: Sound Generator Modification

Post by Marlon » Tue Aug 04, 2015 3:27 pm

Yes - both removed love the sound :evil:
Great video btw - what's the circuit and are you driving a 3.0si?
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Re: Sound Generator Modification

Post by Rorybeanbutler » Wed Aug 05, 2015 5:24 pm

Jesus christ thats loud with both out! Does this reduce increase power?
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Re: Sound Generator Modification

Post by sk93 » Thu Aug 06, 2015 8:26 am

Rorybeanbutler wrote:Jesus christ thats loud with both out! Does this reduce increase power?
neither.
:zzzz:

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Re: Sound Generator Modification

Post by Rorybeanbutler » Thu Aug 06, 2015 11:38 am

sk93 wrote:
Rorybeanbutler wrote:Jesus christ thats loud with both out! Does this reduce increase power?
neither.
Cheers. Any ideas which one is best to put back in just to reduce it a little.
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Re: Sound Generator Modification

Post by sk93 » Thu Aug 06, 2015 12:53 pm

Rorybeanbutler wrote:
sk93 wrote:
Rorybeanbutler wrote:Jesus christ thats loud with both out! Does this reduce increase power?
neither.
Cheers. Any ideas which one is best to put back in just to reduce it a little.
rearmost :)
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philipw
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Re: Sound Generator Modification

Post by philipw » Thu Aug 06, 2015 4:34 pm

Marlon wrote:Yes - both removed love the sound :evil:
Great video btw - what's the circuit and are you driving a 3.0si?
Yes its a 3.0si around Snetterton a few weeks ago.

It does make a great noise with both pieces out but only from 5K rpm+. I found mine made a horrible boomy noise around 4K, which was just intolerable for my poor ears :rofl:

Although maybe some clip is loose to cause the booming noise, not sure.

Just the skinnier piece of foam in now and all is good :thumbsup:

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Re: Sound Generator Modification

Post by Rorybeanbutler » Fri Aug 07, 2015 9:10 pm

Does this just make it louder in the cabin?
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Re: Sound Generator Modification

Post by ben g » Sat Aug 08, 2015 12:38 am

Yes, just louder in the cabin as it pipes the sound in from the induction system.

I had both pieces out aswell an an aftermarket air filter (induction kit) and it hurt my ears! So much so, I put a piece of foam back in. I then removed the air filter and put the standard one back on as i'm getting too old for a loud daily driver :lol:
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Re: Sound Generator Modification

Post by STUBOY2UK » Tue Aug 25, 2015 1:35 pm

I removed the foam nearest the cabin and think it's too loud under hard acceleration, it's not a good, deep sound, it kind of hurts your head. I've cut the piece of foam in half and put half back in, now it's too quiet again :roll:
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Re: Sound Generator Modification

Post by Hilly30si » Wed Sep 23, 2015 7:05 pm

I took the foam out of the cabin end today the sound was ok but nothing extraordinary. I then put some back in cutting about an inch off, I then took all the foam out from the engine side, sounds great now, going on a run tomorrow so will see if it's good or not
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Re: Sound Generator Modification

Post by CrazySmurf » Thu Jan 07, 2016 10:44 pm

Hi,

I want to add a sound generator to my 2.5l Z4.

Please can you tell me what parts do I need exactly to fit one? And if I need to replace any existing parts with 3.0 parts?

I guess I need all the parts shown in this link:

http://www.realoem.com/bmw/enUS/showpar ... Id=13_0999

But is that all or do I need anything else such as a new airbox?

Thanks.

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Re: Sound Generator Modification

Post by STUBOY2UK » Fri Jan 08, 2016 5:53 pm

Those look like the correct parts but I wouldn't bother if I were you, it really isn't very good!
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Re: Sound Generator Modification

Post by Rorybeanbutler » Fri Jan 08, 2016 6:15 pm

STUBOY2UK wrote:Those look like the correct parts but I wouldn't bother if I were you, it really isn't very good!
Ditto. I've put it all back in. Just a drone more than anything.
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Re: Sound Generator Modification

Post by Marlon » Fri Jan 08, 2016 7:54 pm

Its worth doing if you already have the sound generator and all you're doing it pulling out a bit of sponge. However, I wouldn't go to the trouble of fitting a whole unit.
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