I have the same turbo but it bolt on to my manifold and it an internal wastegate with 22lb spring. It only dyno at 334hp/314torque. WHY???? Can u help me? The following is what I have done to the car: Wisco piston 8:3.1,Manley rod,Brian crower 280 cam,Brian crower valve spring n retainer,cam gear(set at zero),880cc precision injector,fuel rail,adjustable fuel regulator( set at 43-44 psi),.60a/r side turbo, aem wideband and boost controller,act stage 3 clutch,3" from down pipe to muffler, no cat converter. Timing was set at 8 degree(that what my guy at Titan motorsport in Orlando told me) he don't even know why this turbo didn't make more. Is it my turbo manifold? I bought a no name turbo manifold from eBay,but it was desperate because my old one is crack. But rite now I'm porting my stock evo9 turbo manifold and planning to used it. What do u think? I just don't understand y my tuner guy don't know why it was giving me a low number. Please help me!!!!! Private message me please

 

nice setup, numbers are good too