Quote Originally Posted by jim97regalgs View Post
yes well this was done on a mustang dyno wich always read low. i use this same dyno on all my cars and also use a dyno jet. and the difference between the is about 13%. so that would put me at your 320whp claim. 323whp 371wtq to be exact. mustang dynos have been called the heartbreaker. and for this very reason. running 93 octane.
This all depends on if the calibrations done beforehand are correct... in your case they seem right and your numbers look pretty respectable for your setup. The car likely runs very hard. Just tell people you make 280ish and let them scramble for excuses when their 350whp cars get smoked. Most people think inflating their whp numbers is impressive, I think the opposite is impressive