A&Q about 350Z
Q:
If i install a performance exhaust on my vehicle, it's going to get louder, i don't like loud vehicles unless they're muscle cars or really cool so i'd like something that i could put in my exhaust or something to make it quiet but take it off if i go racing. does anyone know of something like this? I really don't want to have a loud car because it gets annoying especially on long trips.
A:
Just have a Y installed, have it flow though one side and cap the other side, when you want it to be lould uncap it.
A:
there are cast iron exaust valves...but hten you have to find room for 2 exaust systems...
there are cone type scilenders (look sort of like spark arrestors for dirt bikes) that yo ucan put in your tail pipe but i dont know how well they work, some mufflers have scilendcers you can remove to "tune" the sound of your vehicle...my friends tiburon has a muffler that does this.
A:
Try using a supertrapp muffler.
In about 30 sec you can go from quiet to loud and free flowing.