Originally Posted by Airboy
IIRC, Ed's original calibration for the dyno was based matching up results with his road dyno software, which happens to be close the old Mustang results.
Correct. My old road dyno software came in right at what old Mustang dynos read. That's the only reason I believed those numbers to be more "realistic". But who cares in the end. I do think its odd that Subaru rates the new STI's at 305bhp but they only make about 200whp on the lower reading dynos. To the same degree, however, the 09+ WRX's are rated lower than the STI but make more whp. Manufacturer ratings just don't seem to be all that accurate.