Bought a new BSR Optiflow kit as I wanted a little bit more blowoff + compressor noise. I can also fit my Velocity Stack filter (150mm diameter).
It has been sold in the meantime as the extra induction noise does not fit the S80 to be honest.
BSR Kit: 4900705
Max HP: 410 HP
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
And also decided to post a little video from the K&N 57i (57-0669) induction kit. Enjoy!