Premium Stainless Steel Exhaust Systems Push Horsepower and Torque Levels to New Heights; Feature the Company’s Brand-New Tips

MONROE, Mi., July 15, 2010 – The 2010 Ford Mustang GT can gain even more horsepower and torque plus great looks through the addition of any of the new performance exhaust systems available from DynoMax® Performance Exhaust. The new cat-back systems are available at performance retailers nationwide.

DynoMax, an innovator in performance exhaust systems and mufflers, is manufactured and marketed by Tenneco Inc. (NYSE: TEN). DynoMax is one of North America’s leading suppliers of dyno-proven exhaust technologies for muscle cars, diesel and gas trucks and sport utility vehicles, and sport compact/European cars.

All of the new DynoMax performance exhaust systems include high-quality, 409- grade stainless steel, a premium material that provides extended protection against corrosion, and include the new logo-embossed DynoMax double-walled “show” tips.

The systems – built specifically for “Pure Unadulterated POWER” – offer coverage of several late-model Mustangs, including the 2010 Ford Mustang GT and 2005-09 Ford Mustang GT. The systems offer enthusiasts two separate performance muffler options: Ultra Flo™ Welded or the Race Bullet™.

Boosting horsepower by 20 and gaining 18-ft. lbs. of torque, the new axle-back Ultra Flo Welded system for the 2010 Mustang (p/n 39488) includes 2-1/2-in. stainless steel piping, routed to match OE piping for easy installation and trouble-free performance, and new 3-1/2-in. stainless slant-cut specialty tips. The system includes a pair of legendary DynoMax Ultra Flo Welded mufflers, a straight-through, unrestricted design that is dyno-proven to support up to 2,000 SCFM and 2,000 horsepower. These mufflers are 100-percent welded for exceptional life and durability, and also include exclusive Continuous Roving Fiberglass (CRF) technology to absorb unwanted interior resonance and provide a rich, deep performance tone.

The new cat-back DynoMax Race Bullet system for the 2010 Mustang (p/n 39489) features 3-in. stainless steel piping and 4-in. new style tips plus Race Bullet mufflers and x-pipe. Built to offer wide-open performance and sound, the system includes the DynoMax Race Bullet muffler, an extremely lightweight, compact muffler design. Also 100-percent welded for maximum durability, the Race Bullet utilizes CRF technology which helps provide an incredibly throaty performance race tone.

The new stainless system for 2005-09 Mustang GT models (p/n 39414) features the DynoMax Ultra Flo Welded mufflers, 2-½-in. pipes and brand-new style 3- in. tips. This system posted a gain of 6 horsepower and 8 foot pounds of torque during recent dyno testing.

All DynoMax systems include OE-quality hangers and brackets for easy, fast installation.

The new stainless systems are covered by a limited lifetime warranty and exclusive 90-day Performance and Sound Guarantee, an offer that lets enthusiasts try the muffler for 90 days. Consumers can return the product within 90 days for a full refund of its purchase price. Additional restrictions apply and can be found at www.DynoMax.com.

DynoMax offers a full complement of Ford Mustang products, including powerenhancing Super Turbo and Ultra Flo exhaust systems covering applications 1986 and newer; direct-fit muffler applications for Mustangs 1984 and newer; and header coverage for 1964 thru 2003 Mustang V8 applications.

For more information about DynoMax products for the Mustang, please visit www.DynoMax.com, contact your nearest DynoMax supplier or call 1-734-384-7806. For the name and location of your nearest DynoMax retailer, check out the Dealer Locator at www.DynoMax.com.

Tenneco is a $4.6 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 21,000 employees worldwide. Tenneco is one of the world’s largest designers, manufacturers and marketers of emission control and ride control products and systems for the automotive original equipment market and the aftermarket. Tenneco markets its products principally under the Monroe®, Walker®, Gillet™ and Clevite® Elastomer brand names.