The uncrowned king of luxury SUVs, the Rolls-Royce Cullinan, has received a software remap from VFEngineering.

The tuner promises an extra 100 HP and 110 pound-feet (149 Nm) of torque courtesy of its modified ECU, which allows the twin-turbocharged 6.75-liter V12 to kick out 663 HP and 737 lb-ft (999 Nm) and drop the 0-60 mph (0-96 km/h) time from 5.7 to 5.1 seconds, according to their test. And all that for a relatively reasonable $3,995.

Video: Here’s A Chance To See A $400k Rolls-Royce Cullinan Going Off-Road

VFEngineering has played it safe, as besides the Stage 1 software upgrade they haven’t done anything else to the Cullinan, but if you so desire, there are several other tuners out there that would take care of the looks. Mansory, for one, has a complete body kit available for the British SUV, and there is nothing subtle about it. The cabin follows the same route with a very turquoise appearance, in this case, with the new shade being applied to almost every touchable surface.

Other options, like Spofec’s Overdose, are a bit more discreet, but they still do not do justice to what is otherwise a very classy high-rider. And speaking of Spofec, the tuner also has a plug-and-play module on its shelves for the Cullinan, which unleashes 676 HP and 745 lb-ft (1,010 Nm), allowing it to hit the 62 mph (100 km/h) mark in 4.9 seconds.