text: are pipercross viper induction kits any good? i am thinking of fitting one to my 2000 reg renault clio 172 sport. is it worth the money? if so what are the benefits? dude, these filters really work well when combined with a decent performance exhaust, although you will need to have the engine set up after on a rolling road to gain the best possible power increase...make sure you get it done at a reputable tuners too...dont trust just anyone to do it.. with the above done you should see an extra 20 to 40 b.h.p and more response with higher rev's... next step is a stage 3 cylinder head and some super sticky tyres...fuuuuun !