The drift felt good. My arms were crossed and the big port 3.0 sounded great. The tach hovered at 6500-7000rpms. The M&K RSR muffler screamed. In a moment it changed for the worst. The changeover happened in an instant. I was shocked. Adrenaline pumped through my system and fear took over. How far can I drive it? What did I do? What could it be? The car was clearly misfiring.