What happens when Oberlin, Ohio, based Switzer Performance gets its hands on a BMW M5? As you may have guessed, more power -- some 140 horsepower to be exact -- thanks large part to the addition of an advanced engine management system and other updates designed to dial the M5's twin-turbo 4.4-liter V-8 up several notches.
Switzer says its P700 BMW M5 is one fast and loud machine thanks to the addition of its high-performance, stainless-steel exhaust system designed to help augment the car's 700 screaming horsepower. Can we really complain about hearing that wonderful, turbocharged V8 sound? Less-restrictive mufflers and larger-diameter tubing were also added by Switzer to help increase the amount of air able to move through the engine.
Working with factory systems to help alleviate any warranty concerns, Switzer's setup features high-flow drop-in air filters as well as a removable engine control module. A stock M5 will produce 560 hp and 502 foot-pounds of torque. With its updates, Switzer says the P700 M5 produces 640 foot-pounds of torque to go with the 700 horsepower at the crank. And it all runs on pump gas.
The Switzer Performance P700 BMW M5 package is available for $6995 through Switzer-authorized dealers. Also keep a look out for Switzer Signature series wheels and carbon-nano brake pads for 2013 and onward M5s later this summer.