Just Dynoed my buddies 2012 Mustang GT. The car is a freaking monster! Well be back once it warms up for an E85 tune. 608rwhp and 490 rwtq at 10.XX psi 91 octane. The dyno operator said stock mustangs put down 320-330 on that particular dyno, and that his car now would show around 680rwhp on a dyno jet. The dyno operator has seen running drag radials on a dyno reduce numbers between and 20-50rwhp.
Rich's dyno day - YouTube