drilling air filter box

[welshdean]

A guy who just done some work on my car was saying that if I drilled about 20 hopes in the bottom of my air filter box I should here a better noise like what my dv should be making.
Is this ok to do and any advice would be appreciated ?

[navmk4gti]

Yea lot people have done this. Smooth out the inside of the airbox too and gt a pipercross panel filter

Have search around tons of posts on it and few how tos flying about

[welshdean]

Hmmm, from what I've seen on the net it just seems to make the whole car sound meatier. Rather than the tssshh I'm looking for from gear changes like a dump valve. 

[jamie16v]

it will make the dv louder too mate. not as loud as a cone filter would make it but almost.
the airbox kind of acts like an exhaust resonator, remove it and you`ll get all the noises from the maf back.
make holes in it and you hear the noises but youre also kind of protected from all the engine heat too.

[navmk4gti]

Should of brought a scooby

It will make dv loader too as jamie said. You need a remap and then with drilled airbox will give slight tshht sound from the valve. Or just stik a  cone filter on..get good grunt too

[welshdean]

Navmk4gti, you mentioned the drilling of the airbox will make the dv louder. The problem is..... There's no noise atall at the moment

[jamie16v]

you`ve probably got something wrong there dean, it should make a slight "tss" at least..
i think your boost pressure needs investigating.
next step for you, buy a boost guage! and some  3mm hose 

[navmk4gti]

Have u smoothd out airbox first ..have you got a  pipercross panel filter?

[welshdean]

Yes I've got a pipercross panel filter. And no I've not smoothed the box as of yet. My dv is fine and the same thing happens with my mate's dv

[navmk4gti]

If you expectin a load tshht ur not going to get it. Its gonna be a slight sound. Itss not going to sound like a dump valve on jap turbos. If you want that noise get a forge split r but they dont work as well as 007 or 008