In the automotive world, there are certain combinations that are guaranteed to pump up your bpm and we’re here to offer you a new example of what happens when you mix and aftermarket exhaust with a long tunnel. We’ll use the adjacent video for this, with the footage showing us a Porsche 911 Turbo S that had received an Akrapovic exhaust system accelerating inside a tunnel. The forced induction flat six screams inside t...[...]Source: autoevolution