I wanted to try an open filter, to hear the induction sound and the blowoff sound. I went with a big velocity stack type filter. Although it sounded nice, I already reverted it and went back to the original airbox.
And it looks like this again
Performed the swiss cheese mod, or wak box / wakbox or whatever you want to call it to the lower part of the airbox. Sounds a little bit better & seems to have a little impact on the butt dyno.
Also fitted a new paper OEM air filter.
The best airfilter on the Golf MK3 GTI platform is the original airbox with paper filter. But you might miss out on induction noise, something so desired on any naturally aspirated (NA) engine 🙂
There are ways to give you some induction noise, namely:
I bought myself an extra airbox and removed the snoot + drilled extra holes on the cold side of the car.
Stock Airbox
Removeing the snoot
Fitted a new airfilter