The result is 683 horsepower and 657 lb-ft of torque at the wheels. In what correction factor you ask? Well, that is not specified. Some of these 'tuners' need to get out of the habit of taking low resolution cell phone shots of graphs and simply posting full graphs with all the details:
The F80 M3 also features upgraded DCT clutches and a back end flash to work with the BMS JB4 S55 piggyback. The intake is also upgraded as are the downpipes.
Great peak numbers without any methanol band-aids.