Spec of the turbos as follows:

*TD High Flow billet massive 77mm compressor wheel (62mm inducer)

*CNC machined compressor housing with custom/modified larger inlet neck

*High flow 9 blade huge 65mm turbine wheel upgrade (60mm inducer)

*CNC re-profiled turbine housing with ported and polished manifold inlets

*Upgraded 360 degree thrust bearing assemblies

*650+bhp

Please be aware to get the full potential out of this turbo we recommend a minimum of a decat/sports cat, 94201 plugs, panel air filter or induction kit, Enlarged turbo inlet, Upgraded HPFP, custom map and a minimum of upgraded fuel pump using 99 octane pump fuel.

Higher octane from methanol injection or a ethanol mix in the fuel tank will obviously also yield better results than straight 99 octane.