Joachim Inden of INDEN Design tuning center is a big fan of the Mercedes SLS. But he thinks there’s still room for improvement.

He definitely likes the way the SLS looks, because he leaves it intact in his tuning program for the car, and focuses only on the 6.2 liter V8 engine.

This masterpiece makes 570 hp and 650 Nm of torque in its standard factory form. Inden then fiddles with its exhaust system manifolds and air intakes and also tweaks the controlling software a bit, all for an extra 52 hp, which add up for a total output to 623 hp.

The only other modification on the car is the set of 10.5 × 20 inches matt black wheels, wrapped with 265/30-20 rubber at front and 295/30-20 at the back.