mate ive got a 1.4 16v si
very nice cars,
so far ive had a full exhaust de-catted, got it from powerflow they custom make them to fit your car, sounds wicked, got a ramcharger induction kit from ktec racing, fitted out a 12" vibe sub and amp, audio bahn components with a kenwood amp running them,
am hopefully getting it lowered 60mm with sum 16" 172 alloys and get it colour coded.
but the de catted exhaust and induction kit certainly help the BHP, think standard is 98 so its over 100 now