Restricting the cab induction resonator.

[neil-g8km6]

Another mod that will no doubt send shivers down some owners spines
10mm socket to undo the plastic housing of the resonator from the rear bulkhead, inside the engine compartment. 9mm socket to release the attached intake rubber pipe. I simply cut a piece of high density foam and pushed it inside the plastic housing butting up against its internal wall, it is totally secure and cannot go any further. after re attaching the resonator to the bulkhead and then its intake pipe that's it!
Very simple procedure but what a difference it makes; suits me but wont for everyone.
I've posted all the relevant photos on flikr.
https://flic.kr/p/2noaqzh
https://flic.kr/p/2nocRTX
https://flic.kr/p/2nocRWT
https://flic.kr/p/2noafb9
https://flic.kr/p/2nocRSz

[LGC-Adams]

Oh joy!! I shall give this a go.
Like you, I hate these contrived, sporty sounds.
Thanks for posting pictures too.

[biggles330d]

So, what difference does it make. What was it you were trying to solve?

[bcr5784]

[quote=LGC-Adams]Oh joy!! I shall give this a go.
Like you, I hate these contrived, sporty sounds.
Thanks for posting pictures too.[/quote

If you are going to be a purist then most of the "sporty" sounds are contrived. Certainly you would include pops and bangs from the exhaust (wouldn't happen if you shut off the fuel on the overrun), flaps in the exhaust and so on.

[neil-g8km6]

biggles330d said:

So, what difference does it make. What was it you were trying to solve?

I just prefer a quieter cab and it works; little, to no engine noise now when cruising on the motorway, which i often have to do.

[biggles330d]

neil-g8km6 said:

biggles330d said:

So, what difference does it make. What was it you were trying to solve?

I just prefer a quieter cab and it works; little, to no engine noise now when cruising on the motorway, which i often have to do.

Ok. I've seen several comments about toning down the sports exhaust a bit. I swithered a lot when spec'ing mine and ultimately went with the standard exhaust. Glad I did, as you say for longer trips it makes it more refined. I did wonder if the resonator on all the time would get a little bit irritating when you weren't in the mood for it.

[LGC-Adams]

Many thanks to OP.
Just done this high density foam modification.
Took about ten minutes.

Does exactly what I want (yes, yes it's a very personal choice...). No hollow burbly fart in cabin, and quieter for cruising. As I have mild tinnitus, it helps the ears too.

[bcr5784]

I can only speak for my PE rather than later cars with a particulate filter - but I don't think either the resonator or the sports exhaust (in Sport) make any significant difference when cruising at vaguely legal motorway speeds. It's just (but only just) possible to hear a slight increase in noise in Sport - but I'm surprized anyone would make an issue of it. Different matter around town when lifting off or accelerating hard, and I can certainly see some taking objection (or taking a completely opposite view for that matter).

[Byrge001]

Hi Neil et al.,
I did the same, independently, but found that the sound gets muffled, you lose too much of the higher frequencies.
Instead i then fitted a round disk of 10 mm multiplex with a 10 mm hole in the middle.
Its just a friction fit and on the cabin side so no risk even if it would come loose.
This reduces the intake sound just enough without affecting the spectrum.
A smaller or larger hole will allow you to adjust the dampening to your liking.
Cheers, Byrge

[carbonate]

biggles330d said:

Ok. I've seen several comments about toning down the sports exhaust a bit. I swithered a lot when spec'ing mine and ultimately went with the standard exhaust. Glad I did, as you say for longer trips it makes it more refined. I did wonder if the resonator on all the time would get a little bit irritating when you weren't in the mood for it.

I was the same, I was really unsure if I should get the sports exhaust. Any review I watched or read (and this was many) pretty much made out it was a must have, and I could only get a test drive in cars with it, so I couldn't compare. I decided not to get it though, as this is my daily car, and from the test drives I found it a bit too much for all of the time (if it was my weekend toy and not used all the time, then that would be very different).
I recently had a loan car for a day which had the sports exhaust, so it was interesting to compare to mine. I'm not regretting my decision, the sports exhaust is fun in small doses, but completely get how it would start to irritate over time.