Well after my 40 mile drive this morning, I think it has helped alot with lower down power it feels alot less ristrictive right from the start.
I deff would not say that it is worth regals price tag.
If it has added any BHP i dont really know until i get back on the RR.
For owners that have a VX though the weight difference to the gains that you may get with it, may be a pointless purchase?