when I first drove my car it was a bit quiet but still had a slight growl to it. Nothing like the infiniti g35 but after ragging it out a bit the engine has loosened up I actually took it to a shop in airpark and dynoed it just to see wat kind of power it was putting out. 179hp not bad but the growl has deepened a lot. It sounds really ice now and I can help but rev it up a bit. Does anyone know where I can get a new titanium exhaust system. I heard there was a new titanium exhaust with a carbon fiber exhaust. please let me know where to find it.