About six hours with a lift. It could have gone a little faster, but I had 3 friends helping and we were clowning around a little bit. It is loud above 2.5K RPMs, but it's nice and quiet below that and pretty much sounds stock at highway cruising speeds. It's like it took the way the FRPP Sport exhaust normally behaves and amplified it only during the times when you jump on the throttle.Damn that's sounds loud..Post more videos lol..I'm waiting on mine..How did it took you to install?