catback vs turboback

Just as it says, catback = from the catalytic converter back.

Turbo back = from the turbo all the way back, replaces cat.

Meow.

When you hear people talking abot down pipes they prob bought a cat back system. A 3" turbo back exhaust will replace everything from the 02 housing back. A 3" cat back will still leave a bottle neck of whatever size downpipe/o2 housing is left.
Turbo back > cat back