Las Vegas, NV, Oct. 30, 2012 – Tenneco’s (NYSE: TEN) DynoMax^® performance exhaust brand now offers two new drone-free performance exhaust systems for Dodge Challenger R/T and SRT-8 cars. DynoMax performance exhaust products are manufactured and marketed by Tenneco (NYSE: TEN).

Available now at performance retailers nationwide, the new DynoMax systems cover the 2009-2012 Dodge Challenger R/T 5.7L Hemi V8 model (Part no. 38490) and the 2008-2012 Dodge Challenger SRT8 6.1L and 6.4L Hemi V8 models (Part no. 38484). The DynoMax R/T system posted a gain of 10 horsepower and 23-ft. lbs. of torque and the DynoMax SRT-8 system posted a gain of 23 horsepower and 23-ft. lbs.

of torque in recent dyno testing over the stock systems.

These latest DynoMax Challenger systems include the exclusive DynoMax^® VT™ muffler. This innovative muffler features a precisely calibrated, patented internal valve that ensures maximum performance and provides a drone-free experience inside the vehicle. The DynoMax VT muffler – engineered to deliver DynoMax’s trademark “Drone-Free Performance™” – is a welded stainless steel muffler and includes an entire set of design enhancements to help increase horsepower and performance.

Each stainless steel dual system for the R/T and SRT-8 car models also includes 3-in. high-quality, 409-grade, OE-grade, mandrel-bent pipes; a high-flow X-pipe; and a pair of 4x7-in. buffed and polished tips complete with show-stopping, embossed DynoMax logo.

All necessary OE-style rod hangers, stainless steel band clamps and other hardware is included in each kit. All DynoMax systems include handy, full-color guides for fast, easy installations.

DynoMax Challenger exhaust systems are covered by an exclusive 90-day

Performance and Sound Guarantee. The 90-day Performance and Sound Guarantee allows enthusiasts to try the product for 90 days. If within the first 90 days of ownership the consumer is unhappy for any reason, they can return the products for a full refund of the purchase price. The systems also are covered by the DynoMax brand’s limited lifetime warranty. Additional details and restrictions apply and can be found at www.DynoMax.com.

The DynoMax brand provides one of North America’s leading exhaust technologies for late-model and classic muscle cars, diesel and gas trucks and SUVs. For more information about DynoMax products and the latest systems for the Challenger models, 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 $7.2 billion global manufacturing company with headquarters in Lake Forest, Illinois and approximately 24,000 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 and commercial vehicle original equipment markets and the aftermarket. Tenneco markets its products principally under the Monroe^®, Walker^® and Clevite^® Elastomer brand names.  ###