hi there, ive not long had a carbonio cold air intake system fitted to my 1.8t it give a lovely deep growling sound, and when combined with the forge 007p diverter valve gives you a loud dump valve sound, i fitted it myself its quite easy!!! also given me extra 10 bhp approx
go for a cold air intake much better although a little bit more money ,i can highly recommend carbonio!!,
its made from air craft carbonfibre loads lighter than others

i bought it from awsome gti for about £180