Thread: Dual exhaust on n/a 3.8

stock air box is restrictive, now put on a cone filter that is less restrictive, more air is able to pass through the engine and out the exhaust
the more air going in has to come out as well and it comes out at the end of the exhaust system where the mufflers are so they will behave differently

Not trying to argue with anyone or be a pita at all. I havnt been on the grand prix scene for very long so believe me or not, try it yourself. I cant get the second video with the deeper sound to send to my email. Even on something as small as my one cylinder 450 cc quad the engine tone changes when you add a different intake. Simply because the air is flowing at a different cfm through all of the parts you just mentioned. More air flowing into the tb through the intake manifold, into the heads and out through all of the components you just mentioned at greater volume creates a different sound again if you dont believe me get a db meter and test it at the pipe it does change. If you really want it to change up the compression and port the heads, then it will be very noticable.