:naughty: how do i gain more horsepower 03 v6,accord ,,,all s i hear is a airfilter or pully s or some loud exhaust that does nothing but attract cops and dummies who thinks sound makes you go fast ..they re must be more ways to gain HP than that..like 340HP would an achievement and new time slipsneed more power

Add a turbo Try http://www.turbobygarrett.com/turbobygarrett/jsp/index.jsp . They may offer somthing for your 03

wat about heads ,bigger valves ,cams???

new cars will gain little from bolt ons. to add real power turbo or supercharge is the way to go.

Actually intake and exhaust will add a noticeable power difference, I have both now. My exhaust is Borla and is hardly louder than stock, I hate loud exhausts so I love my borla!