My Dyno Results...

I would expect you should be getting 340 torque, 360hp at the wheels. Maybe there is some calibration error in their setup and maybe the fuel has a very slight impact. Every car can't be exactly the same as stated in the specs, so maybe your car legitimately has less power for some reason. I think the largest factor is probably the automatic transmission. Regardless, I can't see losing 80 units between the engine and wheels.

Did you turn all traction control off? The cars seem to be a bit more "lively" with AdvanceTrac turned off. As a scientist, I would be curious to see you and another stock car of the same year and setup do some pulls and compare results.

Hmm- governor on the dyno or car? I had my '11 GT up over 150mph when it was stock...racing a newer SS Camaro. He was not happy to be on the losing end of a Ford/GM battle.

Peak horsepower and torque are usually found in the main drive gears like 2nd, 3rd, or 4th. I don't believe you have to be in 6th gear/overdrive/going top speed to get an accurate power band curve. Someone correct me if I'm wrong.

I know I went over 145 stock...so unless this changed from '11 to '13, I think you are getting some bad information. If you want to find out, open her up on a quiet/empty interstate and see if she shuts down at 145.

The governor is set at 147 actual. I have tested this several times. The speedo on the dash is slightly optimistic and the needle is so think it is hard t discern clearly. Tough thing with dyon on auto is there is no 1:1 gear to test it in. That can affect the results.