All Things Mk5 > Mk5 General Area
Cold Air Intake Fitted - Too Loud? (help)
mjmallia:
If the DV failed, you would have heard it quite clearly even with the standard airbox setup. The induction cone will amplify it even with a fully working one.
Kodap_MK5:
--- Quote from: mjmallia on May 21, 2025, 01:07:33 pm ---If the DV failed, you would have heard it quite clearly even with the standard airbox setup. The induction cone will amplify it even with a fully working one.
--- End quote ---
I could hear a fairly obvious off the throttle 'noise' I have also removed the engine/bonnet insulation as it was knackered so i've ordered a replacement for that too as that will be amplifying the noise. DV probably hasn't ever been replaced so I do have a feeling it will have something to do with it, similar to that post I have shared above.. that is exactly my issue and his issues were totally resolved with a new DV.
Kodap_MK5:
Update..
Fit a new Rev G diverter valve today, the old one didn’t look split but I changed it anyway. Doesn’t feel any different to be honest but the noise is still as bad.. is it really just the engine bay insulation that’s causing it? I’m a bit stuck now.. maybe it’s just ridiculously loud!
Ben:
Just thought I’d chime in on this, as around 6 months ago I fitted a Ramair induction kit to mine, and was pretty well astonished at the noise levels!
Being firmly the wrong side of 40, I wasn’t necessarily impressed with the boy racery sound track! Rechecked the install and made sure of no leaks, DV valve replaced etc, but it turns out these hard pipe kits just do simply magnify the natural forced induction noise, that’s normally covered up by that ludicrously convoluted VW standard intake top cover! (I’ve since seen the Ed30’s are quieter after having an induction kit fitted by virtue of the DV placement being different).
Anyway, I’ve since learnt to live with it and not over think it too much.
mjmallia:
They are still loud even with the ED30/S3 DV placement, as I relocated/plumbed my DV off the turbo to the ED30/S3 location to stop the heat soak that damages them and for much easier DV checks.
With also being the other side of 40 :grin: I sold it all and went back to original, even after the enclosed BMC CDA unit.
Each to their own
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