The number of the day is 5,076. That’s the pressure at which the fuel injectors in the new Stellantis Hurricane 4 Turbo engine blast gasoline into the combustion chambers. Imagine the business end of an industrial pressure washer designed to strip paint and rust, and you’re in the right PSI ballpark. There’s a terminology of the day for this story, too: Turbulent Jet Ignition, or TJI for short. When the new Stellantis Hurricane 4 Turbo arrives beneath the hood of the 2026 Jeep Grand Cherokee, it’ll mark the industry’s first mainstream use of this revolutionary system.
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