Roush Supercharger Upgrade Kit Phase 2 (2015-2017 Mustang GT) 421994

outstanding performance of our 2015-2016 Phase 1

supercharger system by adding proven core components and

careful calibration, for an additional 57 horsepower and 65

lb-ft of torque over our 670 hp/ 545 lb-ft system (PN 421823).

The result is an outstanding 727 hp/610 lb-ft of torque while

retaining the daily con dense you expect from the

engineering of ROUSH Performance.

System Contents

• Fuel pump controller

• 80mm Supercharger Pulley

• (8) Motorcraft Spark Plugs

• RDT Re ash Voucher

Roush engineers spend hundreds of hours in the laboratory,

on the dyno, and out in the eld to ensure the components

and calibration deliver consistent performance in all

conditions.

The upgrade installs easily with a preset plug and play fuel

pump controller, colder heat range spark plugs, and a higher

boost 80 mm supercharger pulley. A ROUSH Diagnostic Tool

(RDT) re ash voucher is in the box, and your upgraded Phase

2 calibration can be downloaded to your ECU in minutes by

your dealer.