You can’t make this type of power unless you have twin turbos. — John Urist, Hellion Power SystemsThe war for second-gen S550 supremacy is already waging on battlefronts across the globe. Long at the forefront of massive power numbers from turbocharger upgrades, Hellion Power Systems are back at it with the 2018 Mustang GT and its Gen 3 Coyote engine. The company’s main man John Urist is a firm believer in the benefits of turbos, especially when it comes to the latest Mustang.
“Once again the Hellion twin-turbo combo proves to be the top of the heap when it comes to Mustang performance, including the 2018 Mustang. The factory has given us a great platform and we need to be able to adjust to fit what it does best,” John enthused. “We can set the boost anywhere from two pounds to 20 pounds while sitting in the car. You cannot do that with a belt-driven setup, and you can’t make this type of power unless you have twin turbos.”

Hellion 2018 Mustang GT Mods
• Bassani 3-inch cat-back exhaust• Fuel Injector Clinic 1,000cc port injectors
• JMS FuelMax fuel pump booster
• Hellion Eliminator twin-turbo system with 62/66 Precision turbos
• HP Tuners custom calibration by Eddie Rios/Addiction Motorsports
• Torco 108-octane unleaded fuel
• Turbosmart eBoost 2 boost controller w/ four-port solenoid optionTo that end, John and his Hellion crew were quick to take what they had learned designing twin-turbo systems for the 2015-2017 Mustang GT and the 2015-2018 Shelby GT350 and applied to the latest Mustang with a few tweaks.
“We were the first company to have a turbo on a 2018 Mustang, so the kit itself was done. It is very similar to the 2017 kit that we have had great success with. We just needed to start learning the new transmission functions and the new fuel system tuning,” John said. “This is the second turbocharged 2018. It’s our local car that we were able to spend some more time with to finish our instructions and all the little things.”
Of course, the big thing to overcome was feeding the boosted 2018 Mustang GT Premium automatic with enough fuel and tuning the new combination. To provide more fuel, Hellion added a JMS FuelMax fuel pump voltage booster and a set of 1,000cc port fuel injectors from Fuel Injector Clinic. On the tuning side of things, the Hellion crew turned to HP Tuners to get into the latest PCM and unlock the power potential.
“Erik Brooks and Braden Bergher over at HP Tuners went in and gave us access to all the parameters we needed for Eddie Rios at Addiction Motorports to tune it remotely on Chris Groves’ dyno at The Dyno Edge. It’s a group effort here,” John said. “Basically we turned it up and learned those tables while getting a handle on the blend between port and direct injection and on the final pull, running out of fuel, we made 840 horsepower at 11 pounds of boost.”
As impressive as that is power output is, perhaps more impressive is a fat, juicy slab of torque that truly rocked the rollers — 769 lb-ft to be exact.
“It made enough torque that we had to strap the car to the dyno tight and spray the rollers with VHT to keep it planted,” John confessed.
Burning 108-octane Torco unleaded for piece of mind as Hellion dialed in the combo, this car appears to make more with lower boost levels.

“The higher compression limits the amount of boost you can run,” John added. “In a ’15-’17 car we can run a little more boost because they have less compression. With this car we have to run a little bit less boost, but the final result is really good power.”
With more fuel, this combo is bound for four digits, so stay tuned. For more information on the Hellion kits, you can visit the company’s official site right here.
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