Piped induction noise system

[Toed64]

Hello all

My December 2008 3.0si has a piped induction noise system. I am not averse to hearing the N52 howling, but someone has gutted it and the consequence is that the car is absurdly and irritatingly noisy inside.

My 130i did not have this system and its soundtrack pleased me, so I think I'll just delete the thing, but it occurred to me that there might be an after-market silicone pipe available to replace the whole section. Does anyone know where I might buy such a pipe?

 

[Smartbear]

Hi, i removed the sound generator from my 3.0si for a quieter cabin & didn’t replace the ducting with anything.
Rob

 

[Toed64]

Hi, i removed the sound generator from my 3.0si for a quieter cabin & didn’t replace the ducting with anything.
Rob

Thanks. Did you just remove the sound generator ducting and leave the OE induction pipe?

 

[Smartbear]

Yes, although i capped it off with a handy sized plastic lid i found in my garage. The noise generator isn’t directly “open” to the inlet ducting & won’t cause any air leaks, the sound travels through the pipe via a membrane vibrating & causes sound waves to be produced.
Rob

 

[Toed64]

Yes, although i capped it off with a handy sized plastic lid i found in my garage. The noise generator isn’t directly “open” to the inlet ducting & won’t cause any air leaks, the sound travels through the pipe via a membrane vibrating & causes sound waves to be produced.
Rob

Thanks, I'll do the same. I think I'll still be in the market for a silicone pipe to replace all that junk though.

 

[Sidewaze Samm]

and then you can sell the bits on the forum...

 

[enuff_zed]

Yes, although i capped it off with a handy sized plastic lid i found in my garage. The noise generator isn’t directly “open” to the inlet ducting & won’t cause any air leaks, the sound travels through the pipe via a membrane vibrating & causes sound waves to be produced.
Rob

Thanks, I'll do the same. I think I'll still be in the market for a silicone pipe to replace all that junk though.

Bit confused as to where you want to fit a silicon pipe tbh?
As Rob says, you can remove the pipe from the bulkhead and blank off the hole it leaves, but where were you thinking you needed a pipe?

 

[Toed64]

Thanks, I'll do the same. I think I'll still be in the market for a silicone pipe to replace all that junk though.
[/quote]

Bit confused as to where you want to fit a silicon pipe tbh?
As Rob says, you can remove the pipe from the bulkhead and blank off the hole it leaves, but where were you thinking you needed a pipe?
[/quote]

My 130i just had an induction pipe, no resonator and no piped sound generator contraption. My thought was to remove the whole section and replace it with a simple silicone pipe... I know that I have seen an advert for them, but I now can't find it.

 

[Smartbear]

Thanks, I'll do the same. I think I'll still be in the market for a silicone pipe to replace all that junk though.

Bit confused as to where you want to fit a silicon pipe tbh?
As Rob says, you can remove the pipe from the bulkhead and blank off the hole it leaves, but where were you thinking you needed a pipe?
[/quote]

My 130i just had an induction pipe, no resonator and no piped sound generator contraption. My thought was to remove the whole section and replace it with a simple silicone pipe... I know that I have seen an advert for them, but I now can't find it.
[/quote]

No need to do that, you can just remove the plastic pipe that runs from the sound generator through to the bulkhead without replacing it with anything else, job done
Rob

 

[enuff_zed]

Thanks, I'll do the same. I think I'll still be in the market for a silicone pipe to replace all that junk though.

Bit confused as to where you want to fit a silicon pipe tbh?
As Rob says, you can remove the pipe from the bulkhead and blank off the hole it leaves, but where were you thinking you needed a pipe?

My 130i just had an induction pipe, no resonator and no piped sound generator contraption. My thought was to remove the whole section and replace it with a simple silicone pipe... I know that I have seen an advert for them, but I now can't find it.
[/quote]

No need to do that, you can just remove the plastic pipe that runs from the sound generator through to the bulkhead without replacing it with anything else, job done
Rob
[/quote]

That was more or less my point really.
Obviously I meant blank off the bulkhead hole with something. The sound generator is sealed so no need to touch that.

But.................... before you do all that, have you considered just sticking the foam plugs back in?

 

[Toed64]

OK, I removed the snorkel and found a suitable plastic lid to plug the bulkhead grommet and it's SO much nicer to thrash!

I might replace the snorkel and experiment with bits of foam one day, but for the time being, I'm very happy with it.

Thank you for your advice.

 

[Smartbear]

OK, I removed the snorkel and found a suitable plastic lid to plug the bulkhead grommet and it's SO much nicer to thrash!

I might replace the snorkel and experiment with bits of foam one day, but for the time being, I'm very happy with it.

Thank you for your advice.

The e89 30i used the n52 engine without any sound generator gubbings attached, it might be possible to use some of the intake plumbing from one of those if you really wanted rid of the left overs?
Rob

 

[Toed64]

The e89 30i used the n52 engine without any sound generator gubbings attached, it might be possible to use some of the intake plumbing from one of those if you really wanted rid of the left overs?
Rob

Good tip... if I ever think about it again, I might!

 

[Liam22]

2.5si doesn't have the sound generator attached to the intake pipe. That's what I have on my E86.

Best option is to find a 2.5si owner and swap your intakes.

 

[davidmudley12]

Thanks, I'll do the same. I think I'll still be in the market for a silicone pipe to replace all that junk though.

Bit confused as to where you want to fit a silicon pipe tbh?
As Rob says, you can remove the pipe from the bulkhead and blank off the hole it leaves, but where were you thinking you needed a pipe?

My 130i just had an induction pipe, no resonator and no piped sound generator contraption. My thought was to remove the whole section and replace it with a simple silicone pipe... I know that I have seen an advert for them, but I now can't find it.
[/quote]

No need to do that, you can just remove the plastic pipe that runs from the sound generator through to the bulkhead without replacing it with anything else, job done
Rob
[/quote]

It may be a coincidence but I ran my E85 3.0si with the sound generator removed today, the engine was a bit all over the place and it cut out a couple of times on start up, and was then hunting for a decent idle for a while. I drove the car for a short distance and the throttle was notchy and clearly not happy. I put it back on and started the car up (didn't drive it this time) and it was idling perfectly.

Am I going mad or does the sound generator pipe do more than just channel sound into the car? By removing it does it create an 'open' system in the air flow that created the engine issue or are we looking at a total coincidence here?

Thanks, David.

 

[Rich8]

My money's on mad.

 

[Smartbear]

Thanks, I'll do the same. I think I'll still be in the market for a silicone pipe to replace all that junk though.

Bit confused as to where you want to fit a silicon pipe tbh?
As Rob says, you can remove the pipe from the bulkhead and blank off the hole it leaves, but where were you thinking you needed a pipe?

My 130i just had an induction pipe, no resonator and no piped sound generator contraption. My thought was to remove the whole section and replace it with a simple silicone pipe... I know that I have seen an advert for them, but I now can't find it.

No need to do that, you can just remove the plastic pipe that runs from the sound generator through to the bulkhead without replacing it with anything else, job done
Rob
[/quote]

It may be a coincidence but I ran my E85 3.0si with the sound generator removed today, the engine was a bit all over the place and it cut out a couple of times on start up, and was then hunting for a decent idle for a while. I drove the car for a short distance and the throttle was notchy and clearly not happy. I put it back on and started the car up (didn't drive it this time) and it was idling perfectly.

Am I going mad or does the sound generator pipe do more than just channel sound into the car? By removing it does it create an 'open' system in the air flow that created the engine issue or are we looking at a total coincidence here?

Thanks, David.
[/quote]

Coincidence, the sound generator isn’t open to the inlet manifold & doesn’t create lean running if removed/modified.
Rob

 

[davidmudley12]

Thanks, I'll book myself into the loony bin.