About Us


ASM Performance began life as At Speed Motorsports which was founded in 1996 with an initial foray into Porsche Club Racing. The team continued to grow and campaigned Porsches and Volvos professionally into the early 2000’s.

In 2007, At Speed opened a new shop, located in Hanover, Maryland. At Speed began to expand into the servicing and repair of various street cars, ranging from Porsche, BMW, Mercedes, Audi and Volkswagen. Over the past several years we have had the opportunity to work on a wide variety of cars and SUVs manufactured by Aston Martin, Mini Cooper, Range Rover, Mercedes, Lamborghini, Maserati, Factory Five and Backdraft Racing Cobra kits, Shelby Super Snakes, Ferrari, modern and classic American muscle cars including Mustangs, Corvettes, Firebirds and many others.

2012 brought a change in ownership. The current technicians have all been with the company for a minimum of five years and a combined knowledge base of over 85+ years. Since the change in ownership, there have been changes to the shop, staff, tools, and the services that we offer to our customers.

Most recently, At Speed absorbed the resources of Behe Performance, a well known tuning and repair shop in Beltsville, Maryland. Behe Performance has tuned and repaired thousands of cars all across the country, with clients winning hundreds of championship races over the years–including major races in venues such as PCA Club Racing and SCCA championship events.

With this new addition to our staff and capabilities, At Speed changed its name to ASM Performance.

The addition of the DynaPak dynamometer and a chassis dynamometer room allow us to further expand the services that we can provide. Your performance sports car or SUV was designed for power and handling from the factory, but we can help give you the feel of the power and responsiveness you so desperately want! From oil changes to custom tuning solutions, stand alone engine management systems, and multi-adjustable suspension systems — we do it all!

We constantly strive porsche custom tuningto provide products and services through integrity, honesty, and improving customer communication. Come by to see how we will change your perception of what car care really means!