With its 4.4-liter twin-turbo V8 producing a whopping 617 horsepower and 553 lb-ft of torque, the BMW M8 Competition is the fastest BMW road car currently in production. But BMW won't stop there, as BMW M hasn't set a power limit for future performance cars. That means we could see BMW M cars with supercar levels of power in the future. But Manhart Performance has already beaten BMW to it because the tuner has already given the BMW M8 Competition a massive power increase.

By installing a new intercooler and revising the ECU software, Manhart has managed to extract 823 hp and 774 lb-ft of torque from BMW's 4.4-liter twin-turbo V8 in its new MH8 800 tuning package. That's more power than you get in a Ferrari F8 Tributo, or McLaren 720S.

With these upgrades, the MH8 800 will accelerate to 62 mph form a standstill in just 2.6 seconds, making it the world's fastest BMW M8 Competition. That's noticeably quicker than the standard M8 Competition's three-second sprint time. 0-124 mph also takes just 5.7 seconds. To give the M8 Competition a more aggressive soundtrack, Manhart can modify the exhaust system by removing the gasoline particulate filter and adding a set of downpipes without catalytic converts, adjustable exhaust valves, and quad exhaust tips with a carbon look or a ceramic-coated look.

To help the modified M8 Competition cope with all that extra muscle, Manhart has also upgraded the eight-speed automatic transmission. Adjustable KW coil springs bring the MH8 800 closer to the ground and can be adjusted by up to approximately 1.18 inches.

In addition, the MH8 800 has a custom suspension setup and the factory-standard carbon-ceramic brake system, which can both be configured on request.

Visually, the MH8 800 stands out from the standard M8 Competition thanks to a carbon front spoiler lip, front apron inserts, a rear spoiler lip, and diffuser insert that make the grand tourer look more aggressive. Rounding off the exterior changes are gold racing stripes that contrast with the black exterior. This color combination is also applied to the customer 21-inch wheels wrapped 265/30 ZR21 tires at the front and 305/25 ZR21 tires at the rear. As for the cabin, Manhart can customize the interior with carbon accents applied to the steering wheel and shift paddles.