Accufab exhaust
I just drove back from Ontario to San Diego after having the X-pipe, computer tune, and inlet support installed. It is much quieter than you would expect. When I first started the car I hardly noticed the difference from the inside, and very little difference outside at idle. It has a different sound than the muffler but not loud. The difference is when you get on it. Up to 1/4 throttle, it is a throaty, and tame sound. The neighbors and local police will not raise an eyebrow. 1/4 throttle to 3/4 throttle it starts to sound louder, especially with RPM, but still well within the "legal" limits. Conversation and radio is still viable. At 5000+ and full throttle, it is screaming. Still not obnoxiously loud, but it has lot of authority. I agree with the others that this is the way it should sound. As for the "dreaded drone", you can now hear the engine on the freeway at 2000 rpm, whereas before the engine was quieter than the road noise.
Haven't dynoed, but it seems to be somwhat quicker, with a faster throttle response.
Craig