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23i noise

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flybobbie
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23i noise

Post by flybobbie » Fri Jan 26, 2018 8:43 am

I removed the trunking from the air intake to the filter box mainly to stop any flood water swamping the engine and filter as it has done once before, but got away with.
A unintended consequence is that now there is some intake noise which is actually quite pleasant.
I can't help now wanting to crack the windows open and listen to the noise when i put my foot.
Got to be the cheapest mod i have done to the car.
Also seems to run better, although that might be the new spark plugs fitted.

mcbutler
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23i noise

Post by mcbutler » Fri Jan 26, 2018 11:41 pm

So you have an induction leak. That will likely be messing with your ECU, mixtures etc. Best to get it put back right.
Mark
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Smartbear
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23i noise

Post by Smartbear » Sat Jan 27, 2018 1:54 am

mcbutler wrote: Fri Jan 26, 2018 11:41 pmSo you have an induction leak. That will likely be messing with your ECU, mixtures etc. Best to get it put back right.
It’s not really a leak, it’s still breathing through the same pipe work minus the sound deadening piece over the grills.
The ecu should still give a proper afr under those conditions, so no harm should result :thumbsup:
Rob
Last edited by Smartbear on Sat Jan 27, 2018 4:32 pm, edited 1 time in total.
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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

flybobbie
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23i noise

Post by flybobbie » Sat Jan 27, 2018 9:21 am

Yes just by-passing that piece that acts like a Hoover above the radiator. I suspect removing the part it might be breathing slightly easier as you haven't got the friction of that flattened air intake for the air to be draw through. Easily reversible, but won't be.

mcbutler
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23i noise

Post by mcbutler » Sat Jan 27, 2018 11:52 am

Maybe try adding a K&N filter as well, should sound even better.
What kind of noise is it? Whistle or more of a roar??/
Mark
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flybobbie
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23i noise

Post by flybobbie » Sat Jan 27, 2018 5:03 pm

Yes K & N is fitted inside air box. Sounds like low frequency drone on acceleration.

The_Dude
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23i noise

Post by The_Dude » Sat Jan 27, 2018 10:37 pm

Was after a little more induction noise. Have you got a pic?

Has it thrown up any error codes?
E89 23i M Sport, Saphire Black, Canberra Beige Leather.
Mods: De-badged, blue callipers, gloss black LCI's and roll over hoops, black performance grills, stubby aerial, rear carbon diffuser, gunmetal powdercoated alloys, custom stainless cat back exhaust.

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