You can say you can feel the power of your latest performance mod coursing through your veins. You can quote the manufacturer's estimates, but the bottom line to knowing the extent of your car's power ...

You're in a compact sedan with a 5.0-liter, 416-hp V-8 with four-valve Yamaha heads that contain titanium intake valves. Where do you head? The dyno, of course. And so we did. The fellas at Ralph ...