Driving school with Windy City BMW at Elkhart Lake Wi. My ZO6 is a 2003 with the Lingenfelter 480 hp...

Driving school with Windy City BMW at Elkhart Lake Wi. My ZO6 is a 2003 with the Lingenfelter 480 hp kit and a Corsa Indy exhaust. I'm closely followed by a stock ZO6 (for exhaust noise comparo). This is a front straight 140 mph flyby.