My 2008 NC PRHT is the best daily driver I have had.
My question revolves around the cabin noise. I have quite sensitive hearing, between the drone, road noise, etc it can be overwhelming when trying to listen to music. I have added some extensive sound deadening around the cabin, but I want to knock it down even more.
How much could the helmholtz midpipe knockdown the stock exhaust cabin noise?
I might consider the RoadsterSport street header as well... to help power offset the weight of sound deadening material