No intake is going to give you anything over I say 4-6 WHP. Stillen runs all there test on dyno jets so they get the most gain. HKS and other highend intake don't put HP numbers down because it's going to all depend on your setup and current bolt-ons.
If you want the most HP keep the stock intakes and build around them and then dyno your car and see what you get.
Most people on here buy intakes for two reasons. Sound and looks.
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2013 6MT IPL GrSh|V-Leds|OSRAM | SWIFT | H&R | CUSCO | HKS | 3M |
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