Cold Air Intake Fitted - Too Loud? (help)

[Kodap_MK5]

Hi guys,

Just today I have fit my new Direnza cold air intake kit, my engine cover was knackered and thought i'd do an upgrade in the process.

I can't help but thinking since the fitting, it is incredibly loud.. like almost too loud, inside the cabin and outside it sounds almost a bit like i have a blow off valve fitted?

I did remove my engine/bonnet insulation because it was ripped and sagging, but I have also read online it could be a knackered diverter valve, has anyone else experienced this and if so, help me with some solution, it sounds great when you are booting it, but at lower revs it sounds ridiculous!

Cheers

[mjmallia]

They are a little excessive in noise and a little boy racer in my opinion......getting old 

I sold the open air filter and went BMC CDA which is enclosed and a lot quieter, but after a year or so reverted back to OEM......people are always selling on eBay the original cover/airbox.

[Kodap_MK5]

They are a little excessive in noise and a little boy racer in my opinion......getting old 

I sold the open air filter and went BMC CDA which is enclosed and a lot quieter, but after a year or so reverted back to OEM......people are always selling on eBay the original cover/airbox.

I actually do like the intake noise, but it shouldn't be as loud as it is.. I have found a similar thread from 2017 and it looks to be that the diverter valve being replaced completely resolved the problem!

[GVK]

Is it the off throttle 'chatter' noise that is loud? if so that can point to a failed diverter.

[Kodap_MK5]

Is it the off throttle 'chatter' noise that is loud? if so that can point to a failed diverter.

Yeah, so it's very loud in all aspects but yeah when you let off the throttle that's when it really sounds like I've got a blow off valve of sorts. Way louder than I remember my previous MK5 being with the Ram Air intake fitted.

I have ordered a rev G DV to replace my existing one just to rule that out, i found this post from many many years ago and this is exactly how I would describe the sound I'm getting, his solution was a new DV so hopefully that resolves it.

https://www.mk5golfgti.co.uk/forum/index.php?topic=106607.0

[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]

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.

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  I sold it all and went back to original, even after the enclosed BMC CDA unit.

Each to their own

[Kodap_MK5]

Just to chime back in again, I haven't really felt any major 'difference' either in the car since fitting the intake and the noise is really not to my taste, still able to return it so going to get it all taken off with the original one put back on & get it sent back for a refund!

[RedRobin]

I am very amused by the "I'm over 40" and "boy racer" comments in this thread. But I do respect that different drivers have different tastes.

I have had my Mk5 GTI since new in 2005 and fitted a Forge Twintake fairly early on. I also removed the bonnet's sound deadening and later on I fitted a fully carbonfibre bonnet with air extract vent. I absolutely love all the sounds my GTI makes (Milltek custom built exhaust system throughout) including the turbo lift-off swish-whip.

Guess how old I am ....

I was born in 1947 and have been a petrolhead all my life around high performance cars. So I am 78 and am too old to care two figs what other people think of me and my beloved Red Chariot which in fact is quite famous.

'RACE GOLD' ALLEGGERITA by Robin Procter, on Flickr

[mjmallia]

I do not recognise the car myself.

Each to their own, and tastes are very different between people. 

I too am a petrol head, but have always liked the subtle/clean OEM+ mods........where some others like to go more wild and bold.

At the end of the day the car community is a vast open space, and if everyone was the same it would be a boring place to live.

[RedRobin]

I do not recognise the car myself.

Each to their own, and tastes are very different between people. 

I too am a petrol head, but have always liked the subtle/clean OEM+ mods........where some others like to go more wild and bold.

At the end of the day the car community is a vast open space, and if everyone was the same it would be a boring place to live.

.... Certainly the car community is an open space for people with a variety of personal tastes. In my case I absolutely love driving and high performance in all respects is more important, and safer, than just subtle body styling.

[dennis10]

Just to chime back in again, I haven't really felt any major 'difference' either in the car since fitting the intake and the noise is really not to my taste, still able to return it so going to get it all taken off with the original one put back on & get it sent back for a refund!

I have an Edition30 GTI and enjoy modding, but I just didn't want the noises and hassle associated with swapping out for an aftermarket one (including fuel trims and the fact the EA113 is an ugly ass engine which needs the nice OEM cover over it) - it only really works well on naturally aspirated cars in my opinion.

So I opted to install a Pipercross foam panel filter in mine - sounds superb, especially when hitting 5krpm+ - I highly recommend you go down this route, in my opinion foam filters sound nicer than paper and cotton gauze filters