Borla Performance Industries announces the pre-release of Cat-Back? system part number 140077. This system has been designed for the 2004 Pontiac GTO equipped with a 5.7L V8 engine and automatic or manual transmissions. 140077 installs to the flanges located just after the catalytic converters and is made from full aircraft quality T304 stainless steel. It is a dual rear exiting system with Borla embossed 3 ½" round, rolled edge, angle cut tips at the factory opening in the rear valence. R&D testing has shown that our system flows up to 153 cfm more than the factory exhaust (for a total flow of 917 cfm @ 70psi) and has shown an increase of up to 8 additional horsepower and 8 ft lbs of torque. 140077 weights in at 38 lbs. while the factory system weights in at 43 lbs.

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