well i got the new one,

they fitted a 0.63 xx housin instead of the old 0.57, and a larger comp wheel.


it surges between 3500-4200 rpm over 20psi, and hit full boost 4200-4300 rpm,

i fitted a boost controller to cure the surge, but then the turbo became mega laggy,

and no surge, i mean full boost over 5 k rpm.

i spoke to td, and they sed wired the wastegate shut, it then hit 33 psi at 5000 rpm and held it to 7700 rpm,

which shows the actuator is blowin open, and wastegate leakin.

sent it bact to td, they sed the wastegate started to sieze, and sed they will sort it,

But now i'm to fed up with it,

cos the boost problem we've had with this turbo, (down to the ott back pressure blowin the wastegate open) its wasted 3 mappin sessions, and many hours of testin.

i've decided to get another turbo, most prob a AET turbo, gt30 comp, 0.83 ex housin. and a internal wastegate still. able to run 37 psi boost.

Mark shead of M.A.Devlopments (cheers for advice) sed its the best internal wastegate turbo for my car, and sed he's seen over 510 bhp with this turbo.