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Performance Packages

JMS has been a respected aftermarket tuner modifying Mustangs, Shelby GT500s, SVT Cobras and F150-based trucks, along with countless other Ford, GM, and Dodge vehicles since 1993. We have produced and tuned numerous high horsepower vehicles ranging from 750 to over 1,000 RWHP, and we have used that knowledge to develop reliable horsepower packages using the same parts we install in our well documented and publicized mega-power hot rods.


JMS Performance Power Packages are pre-engineered to be complete solutions for all types of drivers.  Our entry-level kits are easy to install and offer safe, reliable, and affordable performance you can count on every day, while other JMS packages offer considerably more power.  Each JMS horsepower option uses only the components we endorse and use in our tech center, which means the customer gets the best technical support and proven results every time.