The Goodyears are 28.4 inches tall, the Bridgestone tires measure 29.3. To compensate for the speedometer disparity, we plugged in our Crane power tuner to the data port, poked
the buttons, and made the adjustment.
As for the boom tubes and our adversity to unnecessary noise, reading an explanation of Corsa Performance Exhaust’s reflective sound technology (RSC) certainly grabbed our attention. It completely eliminates that annoying interior din that infests the 1,800-2,300rpm zone, or more succinctly, the 5.3’s normal cruise mode. The Power-Pulse RSC design features a 3-inch pipe that runs straight through the muffler which incorporates a 360-degree air gaps at either end that allows sound pressure waves to escape (see photo). The waves are channeled and then returned to the gap 180-degrees out of phase, thus canceling specific (annoying) sound frequencies. A dyno pull or two proved the efficacy of the design. Though it was nearly dead quiet compared to the aftermarket system we had been using, the Corsa assembly produced just as much power and torque as the original.
We like the fact that the 3-inch mandrel-bent Corsa kit emulated the OE exhaust in that it is (304L) stainless steel replacing a lesser grade of stainless steel.
