Fitting new 3" V-Band down pipe with the ATP T3 5 bolt high flow V-band style internal wastegate.
I couldn't bring myself to use the restrictive factory down pipe. This should improve turbo spool up and reduce excessive back pressure.
Rule of thumb for turbo exhaust sizing is 1.5 X size of turbine exducer. 1.89" X 1.5 = 2.83" So 3" OD exhaust should be perfect.