some smoke and exhaust note from my 91 2.5
This is after adjusting my pump and full 3" exhaust. She is now tore down for upgrades. Pump is being sent to swed! http://www.youtube.com/watch?v=wO9bXJLQ0n0
I'd install a cherry bomb or something to kill any resonate frequencies. Sounds cool but I'm more of a fan of the turbo whine than the gurgle.