PhatShaft 66 is a mid to high range turbo upgrade intended for performance and light towing.� The PhatShaft 66 comes standard with a 14cm exhaust housing and can be special ordered with a 12cm housing.� This turbine features a 65mm turbine exducer. The wategate is set at 45psi when it leaves Industrial Injection however boost levels can be adjusted with the adjustable boost elbow.� All PhatShaft turbochargers are equipped with dual grooved bearings and an adjustable boost elbow.�� The original PhatShaft 66 compliments mid to high range fueling upgrades and can support 350 - 650hp