When you start out putting down over 840 horsepower with a brand-new Mustang, it shouldn’t be surprise that there’s nowhere to go but up. The crew at Hellion Power Systems knows a few things about boosting Mustangs with turbochargers. Main man John Urist has won countless drag racing championships in boosted Mustangs and his company created the first bolt-on turbocharger system for 2018 Mustang GT. The second car fitted with that system recently reclaimed its crown as the most powerful 2018 Mustang GT around with rear-wheel outputs of 870 horsepower and 817 lb-ft of torque!

To review, this new Mustang features a totally stock Gen 3 Coyote 5.0-liter engine burning 108-octane unleaded fuel for detonation safety. Fitted with a Hellion Eliminator twin-turbo system this engine runs at the behest of a custom HP Tuners calibration by Eddie Rios/Addiction Motorsports. It is fed by a set of Fuel Injector Clinic 1,000cc port injectors and a factory fuel pump enhanced by a JMS FuelMax fuel pump voltage booster.

The Hellion team continues to push the envelope with the latest Mustang GT as evidenced by the results of the company’s latest dyno pull on its 2018 Mustang GT automatic test mule. This combo has already added 30 horsepower to the rear wheels at the same dyno session that produced 840 ponies and it’s likely only a matter of time before this combination cracks four digits at the tire once it has more fuel supply available.

For more on these systems, you can visit the official Hellion site right here.