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GHL...The sound of the 5" system is very deep, and there is moderate suckback and burble when you release the throttle. The sound is nearly identical to B&B bullets, and is deeper in tone than Borla Stingers. They exhibit a slight amount of resonance at about 2000RPM and below, particularly in 6th gear. This is a small price to pay for a system that can improve your car's rear wheel horsepower by 10-15 in normally aspirated cars, and by 20+ in pressurized engines.
From: In a parallel universe. Currently own 2014 Stingray Coupe.
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Normally you may get a slight bump in HP from a cat back, but not much. Maybe 5-10 hp. I got mine more for the looks and sound than any potential HP gains.
I'm guessing my GHL's ~DOUBLED~ the HP on my Vette. Yesterday, for the first time ever, I got my Vette all sideways and squirrelly trying to hear how good WOT sounded! Before that, the only thing I wanted to do was go fast enough to stop the droning of the stock exhaust. Love those GHL Bullets!
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