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Z4 sound

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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Topcat7seven
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Z4 sound

Post by Topcat7seven » Mon May 22, 2017 10:23 pm

Hi guys,

I am not a long time Z4 owner and I can't delight in being one of the many 35i drivers but I have had my 2012 20i remapped and I'm having a lot of fun in it. I just wish I had a bit more of the noise to match. A few people have suggested an induction kit as I don't really want a Vauxhall Corsa esque fat exhaust. Any thoughts or suggestions would be greatly appreciated.

Many thanks.

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markplant
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Z4 sound

Post by markplant » Mon May 22, 2017 10:30 pm

Look up ducklakeview on here he dies a exhaust MOD to the stock system on the e85/e86, he may be able to help with e89
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Topcat7seven
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Post by Topcat7seven » Mon May 22, 2017 10:48 pm

Hi, thank you. I will see if I can track him down.

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Ducklakeview
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Post by Ducklakeview » Mon May 22, 2017 11:14 pm

I think the op is looking for info on induction kits. ..

Although yes, I can do the exhaust on a 20i...

Mike

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Smartbear
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Post by Smartbear » Tue May 23, 2017 5:46 am

Topcat7seven wrote: Mon May 22, 2017 10:23 pm Hi guys,

I am not a long time Z4 owner and I can't delight in being one of the many 35i drivers but I have had my 2012 20i remapped and I'm having a lot of fun in it. I just wish I had a bit more of the noise to match. A few people have suggested an induction kit as I don't really want a Vauxhall Corsa esque fat exhaust. Any thoughts or suggestions would be greatly appreciated.

Many thanks.
Hi, the n20 rear box has an exhaust flap to modulate the sound, it's possible to alter this so it's in the open position permanently for more noise (golf tee mod)
Rob
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e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

Topcat7seven
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Z4 sound

Post by Topcat7seven » Tue May 23, 2017 5:16 pm

Thanks Rob, actually went to try the golf t this afternoon and discovered my flap is permanently open anyway (not sure why, maybe it's broken).

Mike, could you tell me a bit more about the modifications you can perform?

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Post by Smartbear » Tue May 23, 2017 5:52 pm

Topcat7seven wrote: Tue May 23, 2017 5:16 pm Thanks Rob, actually went to try the golf t this afternoon and discovered my flap is permanently open anyway (not sure why, maybe it's broken).

Mike, could you tell me a bit more about the modifications you can perform?

Are you sure about that? The reason I ask is because it's open from cold & then closes as the engine warms up (I think)
Did you just look into the tailpipe & see it was open whilst the engine was off?
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

Topcat7seven
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Post by Topcat7seven » Tue May 23, 2017 5:59 pm

Hi Rob,

I thought this too so took it out for a good drive and a warm up. They were still open when we got back.

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sw4nny
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Post by sw4nny » Tue May 23, 2017 9:31 pm

Topcat7seven wrote: Tue May 23, 2017 5:59 pm Hi Rob,

I thought this too so took it out for a good drive and a warm up. They were still open when we got back.
If its a similar valve,flap that's used on the e46 330ci they rust and seize open ,well at least mine did.
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Topcat7seven
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Post by Topcat7seven » Tue May 23, 2017 10:42 pm

I think that must be the case, I certainly don't think it has anything to do with the remap. Oh well, I guess I'll have to do some more research into how to get a better noise out of it.

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