Not that great and not done with building it. Running on the 6/7# wastegate springs. Open downpipes dumping just behind the K member. From in the car this shit is LOUD however after looking at these videos afterwards, its not as loud as it sounds on the inside. Do to the exhaust you can only hear it blow off in one video.
Vid 1 takeoff from the house, shifting and running part WOT
Vid 2 Stop sign roll
Vid 3 Blowoff flyby
Ordered my Magnapacks today and awaiting the new X pipe for this kit