Darren-B Posted August 28, 2012 Share Posted August 28, 2012 The stillen sounds the best of them all IMO, just a shame you have to have THAT bonnet & it makes less power than a NA tune +1 The Stillen is a Roots type SC, this is what gives a SC a distinctive whine, Others like the hks & Vortech are centrifugal (like a turbo) do not really give any whine, the only real noise comes from the blow off. When I put a baffled pipe on my blow off valve the SC operation was nigh on silent Quote Link to comment Share on other sites More sharing options...
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