well i'll drove mine today with and without. the only thing i've noticed is without it chatters and with it sissed. if your dv is not leaking you'll get no better performance. all the blokes who keep saying that is total bullshit. its only between the ears your car is going faster.

if your dv is leaking.....well yeah its going faster without it. i'll say.....buy a proper dv then and keep the turbo a little while longer.