Calibrated Power Stealth Mach 1 (64mm) Turbo 01-04 GM 6.6L Duramax LB7

Calibrated Power Stealth Mach 1 (64mm) Turbo 01-04 GM 6.6L Duramax LB7It's still a direct drop in, bolt on stock appearing replacement but with features you won't find anywhere else. The 64mm Mach1 turbo from Calibrated Power improves power, towing potential, and overall performance through a custom designed high flow turbine assembly, a billet compressor wheel, and 360 degree thrust bearings. The larger turbine assembly allows for lower drive pressure, creating a better balance between boost and drive (exhaust

It's still a direct drop-in, bolt-on stock appearing replacement but with features you won't find anywhere else. The 64mm Mach1 turbo from Calibrated Power improves power, towing potential, and overall performance through a custom-designed high-flow turbine assembly, a billet compressor wheel, and 360-degree thrust bearings.

The larger turbine assembly allows for lower drive pressure, creating a better balance between boost and drive (exhaust backpressure). This improved balance under heavy load means more efficiency and power at a given boost number, resulting in lower EGT's (Exhaust Gas Temperature) under heavy load. Overall peak power is also improved, where the Stealth 64 G1 would normally support 600-610 HP, the G2 now pushes the envelope to 640HP. You're not going to find all of these features anywhere else in the aftermarket in a truly stock appearing, bolt-in IHI turbocharger.

The Stealth 64 has been on the market since 2013 and represents everything the team at Calibrated Power has learned, coupled with their in-house manufacturing and quality control to bring the Stealth 64 to the next level.

IMPORTANT NOTE: This turbo will not replace the turbo on a CA emissions truck that was equipped with EGR. Only for fitment on Federal emissions trucks that were not equipped with EGR.