" 600 horsepower at the wheels, all motor, naturally aspirated, with no boost needed. Achieved on 91 octane pump gas no less. These M159 V8 tuning results from Weistec just might make a Mercedes-Benz AMG enthusiast shed a year over the M156/M159 V8 engine going away
. The SLS Black Series is already in a very high state of tune from AMG with the redline increased to 8000 RPM and 100 horsepower per liter (6.2 liter V8, 622 horsepower and 486 lb-ft of torque).
Getting more out of this engine is not easy. Getting another 79 wheel horsepower and 58 pound-feet of torque at the wheels on 91 octane is downright incredible.
Let's take a look at the tune only numbers first. The completely stock SLS Black Series put down 521 horsepower to the wheels. This is a drivetrain loss of 17.3% which is about right where a rear wheel drive dual (wet) clutch transmission car should be using conventional drivetrain loss thinking.
After Weistec's tuning output rises to 549 wheel horsepower. This is mostly due to a torque increases from 4500 rpm to redline so power is being picked up on the top end. This is a good illustration in torque multiplication with revs as a peak gain of 11 wheel torque translates to an additional 28 peak horsepower at the wheels toward redline: "