2003-2004 Cobra Procharger P1SC-2 F-1A
The 2003 version of the Mustange Cobra SVT came complete with a factory-supercharged V-8 with 390 horsepower and 390 foot-pounds of torque. This supercharged beast goes old school with an iron engine block, necessary to handle higher power output. The flywheel, however, went from iron to aluminum for a reduction in weight and inertia, and some experts say that change alone cuts 0.2 seconds off the 0 to 60 and quarter-mile times because it allows the engine to rev quickly. Naturally, reviewers loved the punch that the factory supercharged engine delivered. The 2003-2004 Cobra also had a lower torque curve than previous models, and a new clutch for the 6-speed manual, a goody the reviewers loved playing with.
For the 2003-2004 Mustang Cobra 4.6 liter V4 engines, however, Procharger made supercharger kits which claim to give you the largest increase in horsepower and torque available from any aftermarket supercharger. Procharger claims to deliver twice the performance of their closest competitor, and to protect the engine from excess heat due to the supercharger's low engine intake temperatures. The available choices are the P1SC-2 and the F-1A.
The P1SC kit includes the P1SC-2 head unit, custom upper intake manifold and is capable of 575 RWHP with regular fuel and maximum air flow air components. The P1SC-2 uses stock air/water heat exchanger tuning and an intercooler pump.
The two options in Procharger's F-1A kits are standard and Stage II. The standard kit (cog drive) and the Stage II kit (6 rib) exclude fuel components and computer programming but are otherwise identical to the standard F-1A. These supercharger kits are intended to be installed by professionals.
Procharger systems have proven performance and reliability advantages over their competitors. The lower engine intake temperature is one reason. The manufacturing using computer numerically controlled (CNC) machining with nearly indestructible aircraft aluminum, billeted rather than cast, makes the biggest, strongest impellers available. Billet parts are cut from a chunk of metal rather than metal that's melted and poured into a mold. With billeted machining, the metal molecules are lined up in a congruous manner, giving them greater material strength than cast impellers. Thus, they can be spun much faster to produce more horsepower.
