I took the RS up to Fall-Line Motorsports today to get the baseline dyno run documented before we started the upgrades. Fall line is a very cool racing shop specializing in BMW SCCA and Pro race cars. One of my buddies is one of the owners and a good friend is the cousin of the founder. The RS pulled at almost exactly the factory spec's, so we are not starting in the hole! They had a really sweet all carbon fibre bodied BMW Z3 race car, and although I find that car singularly ugly normally it looked wicked in CF!
Wheel power on the dyno today
298 ft-lbs at 3400 rpm
260 hp at 6000 rpm
Add back the 14% loss through the Powertrain and you have
340 ft-lbs at 3400 rpm
296 hp at 6000 rpm
Which is pretty much right on the nose of the factory spec's for power at the crank
324.5 ft-lbs at 2250 rpm
300 hp at 6000 rpm
Now the work begins on the upgrades...!