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The Edelbrock Stage II Upgrade Kit part #15802 allows customers using the 1580 supercharger (2005-2009 4.6L Mustang) to upgrade to stage 2. The Edelbrock Stage II Upgrade Kit part #15802 includes a 3.25in. supercharger pulley, complete competition air intake system, GT500 fuel pump, injectors w/ adapters, Gatorback belt, and an updated calibration file. This upgrade is intended for racing/off road applications only and is not legal for sale on pollution controlled vehicles. Before a tune can be released complete the disclaimer form and send it back to us in order to receive the appropriate calibration file. This form can also be completed online. Installation Instructions Material Safety Data Sheet
