Hello all!

Back in November of last year, my supercharged creampuff engine ate three of my pistons up and has been in a shop for upgraded parts since then. Currently, the exhaust manifold is stock with a 3" high-flow Corsa exhaust set installed. To avoid another piston failure, I've opted to upgrade to forged pistons, rods, etc (all 10) and possibly up-size the manifolds to 3" to alleviate excessive back-pressure.

My concern is that having the entire exhaust system at 3" will be significantly louder. Does anyone currently have 3" exhaust manifolds and Corsa system installed through-and-through? If so, how loud is it at idle? Since I live in the Greater Bay Area in California, local police and certain people tend to complain...