Our fourth lake test was a success! After troubleshooting the ignition and fuel systems that plagued our last test session, we finally got to rip across the water at 90 mph and there's plenty of speed left in this beast once we get the air/fuel mixture tuned perfectly and stop the turbos from trying to melt the fiberglass boat hull. This video has lots of tips about troubleshooting V8 engines and it ends with us having the time of our lives in Game Over, our twin-turbo jet boat.