Tag: modification

VW Golf MK3 GTI, Airbox Mod

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.

VW Golf MK3 Airbox mod

Also fitted a new paper OEM air filter.

VW GOLF MK3 / New vs Old air filter




VW Golf MK3 GTI Airbox Modification

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:

  • Drilling the airbox
  • Removing the snoot to the side of the car
  • Fitting a (Bonrath) Powerrohr / roar

I bought myself an extra airbox and removed the snoot + drilled extra holes on the cold side of the car.

Stock Airbox

Front view Airbox

Top view Airbox

Removeing the snoot

Trumpet removed

VW Golf MK3 Airbox mod

Fitted a new airfilter

VW GOLF MK3 / New vs Old air filter




Sound Proofing the Aygo

The Aygo has pretty flimsy doors, which don’t help much with the sound quality of your sound system & background noise when you are driving your car. I bought some sound proofing on eBay & added it on the front + rear doors & spare tire well.

Sound quality has been improved greatly & road noise has been reduced. All in all a must have mod for your Toyota Aygo / Peugeot 107 or Citroen C1.

Sound Insulation

Sound Insulation

Toyota Aygo Sound Insulation in door