was yours the forge one, mines tapped into the ecu and has a wee control box, ive never experienced this 10sec dump noise with mine, its always like a 1 sec ptsssh, everytime. ive never experienced any loss of boost, ive had my car on the rollers and it gives a nice even curve (182bhp) and on vag com my motor is holding a good 1.6bar and not taking any big massive drops on gear changes. i never noticed any difference after the dv was fitted than before.