Hello, i'm frenchy, sorry for m'y poor US langage... I was buyer CZP since 2007... Very Good satisfaction whit CZP and Coz ! I buy this product whit "billet Turbodirect" option. Torque IS realy better at low RPM from 2 000 RPM... Specialy on 3000 to 4000 is very impressive ! Maximum pressure at 3000 rpm, either 500 RPM less than turbos stock ! And Go to 7000 quickly ! And 0 turbo lag, Quick and direct réponse ! No delay ! Very good product for update ! Very happy to this choice !