I've noticed that many of my cars sound the same. I think it is because I put a titanium racing exhaust on pretty much all the car. Does keeping the exhaust stock or using a lesser power exhaust give a different sound?
I found that the sport exhaust has a meatier sound (similar to the Flowmaster 40 series).
On my older big block muscle cars that's all I will put on them, I'll give up a few horsepower for that beautiful rumble.