M159 ECU Tune

The M159 is a purpose-built evolution of the M156, reworked so extensively for the SLS AMG (over 120 changes, by AMG's own count) that it earned an entirely new engine code of its own. The headline change is the lubrication system: the M159 swaps the M156's wet sump for a dry sump, letting the engine sit lower in the SLS's chassis for a lower center of gravity and sharper weight distribution in that gullwing supercar. AMG also fitted forged internals, revised cams and valvetrain, and a shorter-runner intake tuned for higher-rpm output, pushing the redline as high as 8,000 rpm in Black Series form and power from 563 hp in the standard SLS up to 583 hp in the SLS AMG GT and a spectacular 622 hp in the Black Series.

Weistec's calibration for the M159 is a software recalibration of the factory ECU, built to work with the dry-sump oiling, forged bottom end, and high-rpm valvetrain AMG already engineered rather than against them. It adds a real gain, 563 to 606 horsepower and 479 to 514 lb-ft of torque, through an OEM-level calibration process, with knock protection, thermal management, and the SLS's factory diagnostics left completely intact. W.1 is CARB EO-certified and 50-state legal, so that precision comes with zero compliance compromise. A supercar engine built with obsessive precision, calibrated to match that same obsession.