06 Cadillac STS-V stock exhaust. No cats
This is a Semi-throttle of my Exhaust setup. "Catless" no cats 3 inch piping to a 3 inch xpipe removing the resonator, back to 3 inch piping all the way to the stock mufflers with 4 inch tips I added. No in cabin drone whatsoever sounds stock inside. Nice and raspy, More vids coming soon!
sts-v driving up hill playing with boost
long video of in side sound from different speeds most for it is up hills.