Hi mate u shud consider buyin a k&n air filter replacement, it just fits and replaces into the original air filter no modifications no nothing, dnt waste your time and money on induction kits coz a faster car needs cold air intake and induction kits jus takes in warm air from the engine bay not making the car any faster reli jus improving sound, but with a replacement k&n air filter u wont need to change your air filter for another 100,000 miles either, u just clean it every 50,000 miles, its part of the k&n 100,000 miles warranty, picked mine up for my mk2b punto for about £38 allows more air intake into the engine and cos uve got an exhaust fitted like me, it will alow easier outer air flow, letting the engine breathe more, should see and feel an improvement in accelaration and petrol efficiency cos i definatly did!:slayer: