As above. If 16v, drilled front corner, snorkel removed, wing blanking trim removed, £5 vws filter. In winter I run no snorkel at all jus a great big hole out front, in summer I run some convoluted cable duct attached to front of snorkel as cold air duct, but the snorkel itself is chopped off inside so I still get the noise with only a few less db's.