If you own a diesel pickup chances are good you bought it for a good reason - be it hauling your tools to work or your boat to the lake. Today's diesels, including the Ford Power Stroke, GMC Duramax, and Dodge Cummins, offer more standard horsepower and torque than their gasoline-fed compatriots. Of course, more power still isn't enough for some diesel truck owners who want, well... even more!

Fortunately there are like-minded manufacturers, such as CORSA Performance Exhausts, who feel the same way. CORSA has been making 100% stainless steel performance exhaust systems at its Berea, Ohio, headquarters since 1989. According to founder and president Jim Browning Sr., CORSA is out to "put the thrill back in driving." Listen to the silky-smooth growl of a CORSA exhaust system and you'll know what we mean when we say "mission accomplished!"

But can an exhaust system really increase horsepower and torque? According to CORSA, there's a straight answer - a straight-through answer, that is. Your engine is, in fact, a giant air pump. The more efficiently it moves air, the more power it makes. CORSA claims its systems increase exhaust flow up to 47% over stock due to their non-restrictive, straight-through design. This, they say, significantly reduces backpressure and lowers exhaust gas temperature, which allows the turbocharger to quickly build boost and enhance a diesel truck's hauling and towing power.

To put these claims to the test, we traveled to Full Throttle Kustomz in Bedford, Ohio. The shop had recently purchased a new F-350 Super DutyŽ featuring Ford's 6.0L Power StrokeŽ Turbo Diesel V8 engine and graciously agreed to aid our investigation.

Full Throttle Kustomz's F-350 Turbo Diesel dyno-tested at 197 horsepower and 362 ft.-lbs. torque at 2800 rpm at the rear wheels with the stock exhaust system.	Removal of the stock system begins with loosening the clamp (using a 15mm socket) on the intermediate pipe located directly in front of the muffler.
Next, the intermediate pipe muffler hangers are removed from the rubber isolators and the tail pipe. The stock system can now be maneuvered toward the front of the vehicle and removed. A soap and water solution was used on all hangers and rubber isolators to facilitate removal.	The design of the CORSA exhaust system (top) is noticeably more streamlined than the stock system (bottom).
Installing the CORSA exhaust begins with positioning the intermediate pipe over the outlet pipe. The hanger is then inserted into the rubber isolator and the clamp is snug fit.	The muffler is then slid over the intermediate pipe outlet and the clamp is snug fit. It is IMPORTANT to make sure the small drain hole in the rear of the muffler faces down when the muffler is installed.
The tail pipe is routed over the axle housing and slid on to the muffler outlet.	The hydroformed exhaust tip is then slid over the tail pipe.
Next, all clamps are tightened to the proper specification of 45 ft.-lbs.	Before tightening the tip clamp, check the alignment of the tip (CORSA recommends using a level) and be sure to allow enough clearance between the top of the tip assembly and the body panel.
A pull on the Full Throttle Kustomz dyno confirms CORSA's claim of increased horsepower and torque. The F-350 picked-up 7 horsepower and 10 ft.-lbs. torque at the rear wheels (9 horsepower/21 ft.-lbs. torque at the crank).	It is MANDATORY that all clamps be checked and tightened (if necessary) after road testing the vehicle and after the system has cooled.
Full Throttle Kustomz's F-350 proudly sports its new CORSA performance exhaust system.	Source Information: CORSA Performance Exhausts 140 Blaze Industrial Parkway Berea, Ohio 44017 800.486.0999 www.corsaperf.com Full Throttle Kustomz 500 Broadway Ave. Bedford, OH 44146 440.232.9670 www.FTKustomz.com