fitted an pipercross induction kit about 2months ago too my rover 25 is 1.4 103 bhp and at first did'ent feel much of an inprovement in performance only sound,the sound it makes is sweet, nice deep roar that can get a bit loud if you get the revs above 5000 rpm but below that you could drive round the streets all day listening too the sound it makes! but after putting a big fat air feed on the car and your doing say 40 and you want too put your foot down the response is alot better seems smoother pulling away and more power can b felt not alot but enough! but the biggest improvements felt are when your on the motorway doing 70 as soon as you put your foot on the pedal your soon see the needle touching 90 i cant belive how quick it gets there a big improvement! but there are down sides too if you like your traffic light pull offs i think a bit of power is lost there not much but enough too tell! but overal im happy with it and give it a 4 out of 5.