So far the Invidia Q300 is doing well with my 2015 Civic SI. The sound of it is not too loud especially when you're inside your vehicle. There is a little bit of drone but you really can't tell unless you pay attention. I'm recommending this part for those who are not looking for too much attention from the cops.
loved the borla exhaust. got it at great price and works better than expected. immediately noticed difference in horse power. great buy and i really recommend it to anybody. autoanything.com is a great place to buy car accessories. will be my primary web site for purchases from now on. thanks.
Causes you to say, " let's take my car "
I purchased some rhino ramps. Popped her up and simply unscrewed the old and replaced her with an aFe. The start up has a nice growl/purr. During acceleration the system is loud and during driving this mellows out (love that feel). Also during downshifts of the transmission the sound hums. Great product and highly recommended