19: Straight Pipes
You’ll often hear muscle car fans bragging about their straight pipes. For a truer sense of an engine’s exhaust note, the straight pipes are a must. However, when it comes to the legality of this exhaust it’s questionable. Straight piping used to be reserved to the hot rod segment but now has made its way onto a number of different cars.
But straight pipes are illegal in California and a number of other states. There are some performance advantages but it’s not worth the headache. You won’t be able to smog or register your ride in certain parts of the country and that just isn’t feasible.