Tuning AMG GT 63 4-Door: Perfecting the Unattainable

Do We Believe Them?

Already a leading figure amongst high-end four-door grand touring sport cars, Genesis X290 has been personalized to adjust the Mercedes-AMG GT 4-Door. Courtesy of Mariani Car-Styling, a family-owned business, they have shown the 63 4-Door a notable metamorphosis which enhances its visual magnitude and strengthened its athleticism.

Mariani far exceeded expectations with their ECU remap of the twin-turbo 4.0-liter M177 V8 engine in the AMG GT 63 4-Door. This database optimization nearly doubles the vehicle’s stock power output, making a massive upshift to a staggering 725 horsepower, bringing it dangerously close to the Mercedes-AMG GT 63 S E Performance’s electric output. Additionally, the modified engine pumps out a huge 700 lb-ft of torque.

So as to boost power and make the V8-powered four-door coupe truly roar, Mariani has fitted it with a valve-regulated exhaust system. This allows drivers complete control over the pipes depending on what kind of driving they want to do – just like the mod jobs Manhart carry out for BMWs. Additionally, an AMG diffuser and tailpipes are included in the package, lending a sporty flair to the back of the vehicle.

Mariani has outfitted an air suspension that is much more than a mere addition to the AMG GT four-door’s stance; its purpose supposedly being to increase ride dynamics, however it is debatable if an aftermarket air system can compete with the fixed coil spring setup developed by AMG.

Mariani provides numerous options of forged wheels, both single and composite, with sizes ranging from 21 to 22″. The tire and wheel are combined in a very precise manner so as to guarantee a millimeter perfect fitment without needing any spacers.

The Mariani SuperSport wheel and tire combo is certainly one to be reckoned with, boasting a wide stance of 11j and 12.5j x 21 inches with 325mm tires that fill the wheel arches with a muscular presence. Though not among the most iconic aftermarket wheel designs, its precisely measured tire clearances make it easy to integrate into the bodywork without much alteration.

Mariani has not revealed the cost of its AMG GT X290 tuning package, but they have declared that they have “perfected the AMG GT 4-Door.” What one person may consider perfect, another may not, so it is all subjective. Nonetheless, Mariani has done their utmost to ensure that their tuning package is the best it can be.