st170 pipercross viper or k and n typhoon???
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st170 pipercross viper or k and n typhoon???
Hi am new to focus sts have only had mine a few weeks now! i was planning on just putting a k and n air fillter on but the car i found and liked had already been fettled with in a bad way!!! A cheap universal induction kit! So now i am looking to replace it with 1 of these two kits but dnt no much about either so was wondering if anyone could give me feedback if you have owned 1 or even better both!!!
Thanks
Joe
Thanks
Joe
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