Today, on the way to the office, I pulled up at a light behind an old Integra with a shiny fartcan exhaust. The first thing I noticed was that I could smell the guy's exhaust, which smelled mostly of gasoline. The second was that his acceleration seemed awfully anemic for the noise the car produced. I had to chuckle at the thought that his "mods" had probably reduced both the power of the engine and the gas mileage of the car. But at least he sounded terrible.