Regardless, the Stage I software adds about 100 horsepower at the wheels on this dyno over stock. Torque jumps up 106 lb-ft at the wheels to an eye opening 628 lb-ft. Bringing up the Dynojet again that would be close to 900 lb-ft at the wheels. Yes, an insane amount of torque.
The Stage II software is able to further improve on the Stage I with gains of 33 wheel horsepower and 87 lb-ft of torque at the wheels for a total of 715 lb-ft.
Yes, the torque falls off hard. This is not a motor that likes to rev or that has a flat curve. It's a stump puller and all about big, big torque down low.
Great comparison illustrating just how much power can be pulled out of the SL65 AMG M275 twin turbo V12.