To prepare the Borla exhaust components for installation CU1100, a high performance adhesive copper paste, was applied to the inside walls of the female ends of the slip fit components. The copper paste is an anti-seize agent that facilitates the alignment and assembly of the exhaust and helps keep the slip fit components from galling over time. Typically copper anti-seize is not advised for use with stainless steel due to potential stress crack formation. However, the exhaust application is not load bearing and therefore risk of an issue with the copper is lower.
Next up the crossover pipe was installed by also utilizing C-clamps from Borla. In contrast to the stock exhaust’s H pattern, the Borla exhaust crossover pipe is an X-shape which is more desirable for flow than 90 degree angles. Lastly, the shortest pipe pieces were connected between the ends of the catalytic converters and the crossover pipe. The slip joints to the cats re-used the C-clamps from the stock exhaust system.
After completion of the Borla cat-back exhaust install the Camaro went for another whirl on the Superflow Dynamometer. The numbers showed a small bump in peak horsepower over stock, reaching 237 hp. The exhaust was not a huge power booster alone, but the consistent 2.5” outer diameter of the new exhaust system should aid in maintaining a low backpressure system for our next performance modifications.