• 2021 BMW M8 Gran Coupe by G-Power

The mighty M8 becomes even mightier

G-Power has unveiled a new tuning program for the BMW M8 Gran Coupe, and it is a doozy. Three different engine upgrades await owners of the mighty M8 Gran Coupe. The most potent upgrade involves significant modifications to the Bimmer’s 4.4-liter twin-turbocharged engine, resulting in an increased output of 808 horsepower and 738 pound-feet of torque. The German tuner’s new kit also comes with aesthetic and aerodynamic changes, as well as the option for a new set of wheels.

2021 BMW M8 Gran Coupe by G-Power Exterior
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G-Power’s newest tuning program is all about raising the of the BMW M8 Gran Coupe’s 4.4-liter twin-turbocharged V-8 engine to supercar levels. The tuner is offering a three-stage upgrade with different states of tune. Each stage comes with its own unique set of modifications, topped by a Stage 3 upgrade that promises to turn the super BMW into an 808-horsepower missile.

The Stage 1 program is a simple software upgrade. It features a plug-and-play kit that zeroes in on the engine’s ECU unit, unlocking more power in the process. Opt for the Stage 1 program and the output of the M8 Gran Coupe’s twin-turbo V-8 engine rises from the standard 616 horsepower and 553 pound-feet of torque to 710 horsepower and 627 pound-feet of torque. That’s an increase of 94 horsepower and 74 pound-feet of torque.

The Stage 2 program comes with the same plug-and-play optimization kit, but it also includes new downpipes and the tuner’s Deeptone exhaust system. This program nets a new output of 759 horsepower and 686 pound-feet of torque. Do the math and that’s an increase of 143 horsepower and 133 pound-feet of torque.

Opt for the whole shebang with the Stage 3 program, and you get all the elements from the Stage 2 program and one important addition: a turbocharger upgrade. This setup helps turn the M8 Gran Coupe’s twin-turbo V-8 into a fire-breathing 808-horsepower and 738 pound-feet of torque monster. The staggering output represents an increase of 192-horsepower and 185-pound-feet of torque over the standard M8 Gran Coupe.

Are there optional upgrades available?

2021 BMW M8 Gran Coupe by G-Power Exterior
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Yes, there are. The three-stage tuning kit for the M8 Gran Coupe’s V-8 engine is the beating heart of this program, but there are also optional upgrades that can be added to your cart.

A custom carbon fiber hood is available, as is a dynamic carbon wing. The tuner is also offering its own 21-inch forged wheels.

You can also throw in a splashy-looking orange carbon engine cover, a new sport steering wheel, and a new gearbox software to round out your G-Power tuning spree.

How much is the cost of this program?

2021 BMW M8 Gran Coupe by G-Power Exterior
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The price of the program will depend on what you get. A simple Stage 1 upgrade, for example, costs €2,495. That converts to $3,000 based on current exchange rates.
The software tune included in the Stage 2 performance upgrade is €1,000 more expensive at €3,495, or $4,202. You’ll also need to shell out €5,360 ($4,730) for the downpipes and €5,950 ($7,156) for the Deeptone exhaust system. That brings the total up to €14,805, or about $17,802.

As for the Stage 3 performance upgrade, the software tune costs €4,595, or $5,526. You’ll also have to pay €5,950 ($7,156) for the turbocharger upgrade, €5,360 ($4,730) for the downpipes, and another €5,950 ($7,156) for the Deeptone exhaust system. That’s a total of €21,855, or around $26,280.

Opt for a carbon fiber hood and that’s another €5,950 ($7,153) added to your bill. The carbon-fiber rear wing costs €3,332 ($4,005) while the Deeptone sport silencer will set you back €4,165 ($5,007). Pricing for the set of 21-inch wheels and the sports steering wheel, on the other hand, are available upon request.

Final Thoughts

2021 BMW M8 Gran Coupe by G-Power Exterior
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You always get your money’s worth with G-Power, and it’s no different with this program for the BMW M8 Gran Coupe. The engine upgrades are the focus of this program, and it’s nice that the tuner isn’t forcing anyone to avail the complementary modifications. Whereas other tuners package the aesthetic and aerodynamic upgrades to their entire tuning programs, G-Power is leaving that decision entirely to its customers. That benefits those who are only in this for the extra power and can do without the carbon fiber accessories.

  • Leave it
    • Expensive
    • Not for everyone
Kirby Garlitos
Kirby Garlitos
Automotive Aftermarket Expert - kirby@topspeed.com
Kirby’s first exposure into the world of automobiles happened when he caught Knight Rider on television as a five-year old boy. David Hasselhoff didn’t leave much of an impression on him (that happened later on in Baywatch), but KITT certainly did. To this day, Kirby remains convinced that he will one day own a car with the same ‘spirit’ as the original KITT (not the 2008 monstrosity). He doesn't know when that will be, but until then, he’s committed to expressing his love for KITT, and all cars for that matter, here at TopSpeed.  Read full bio
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