Originally Posted by kiloil
Is it normal to have AFR in the 13's under a heavy load? Looks great!
Nice catch, I apologize I did not clear this up in the original post.
The line used to show the power figures at that particular RPM can be a bit deceiving for the AFR.
The car actually ran closer to 12's throughout the run and straight through redline. We had a slight issue of the sniffer coming out at redline.
Basically we didn't want to screw it on too tight and damage the exhaust tips on the car.
Take a look at the AFR a few hundred RPM earlier, it maintained that AFR mixture to redline which we confirmed with other tools on the dyno and the street.