RedSC,
I don't know anything about the atmospheric settings, but the cars were very close to their factory numbers. I thought the 97 993 was about 280ish HP, am I wrong?
Factor in 15 drivetrain loss @ 42HP minus the 280 = 238HP, his first run was at 198HP hence my 40 HP loss statement.
The car previous was a 95 993 and it pulled at 219HP run which was close with it's configuration.