Check out exhaust sound comparisons between the most common brands and muffler deletes. Borla, Corsa, Magnaflow, Flowmaster, and more. Many different makes & models available. FMS Performance was started in May of 1974 in San Bernardino, California. FMS Performance specialized in exhaust system upgrades as a Muffler Shop. FMS Performance exhaust system designs were quickly recognized by aftermarket distributors and were also sold around the world. As vehicles became more and more hi-tech, FMS Performance became interested in other performance enhancing products. We added cold air intake systems, computer programming, headers, superchargers and more similar products. Team FMS Performance is continually looking for ways to increase performance on today’s vehicles safely. Because we have the ability to manufacture, distribute, and install most of the products we sell. This gives us a better knowledge by seeing first hand how these products fit, perform and look.