Stellantis' SRT performance division debuted a new eBoost Air engine powertrain concept on Thursday at its center on Detroit's east side.
The eBoost Air system uses an electric compressor to address turbo lag on the twin-turbocharged 3.0-liter Hurricane inline-6 engine. SRT claims the system 'virtually eliminates' turbo lag.
The electric compressor is placed upstream from the traditional exhaust-fed turbochargers. The system is designed to make the engine's power delivery feel more like a supercharged V8.
The eBoost Air system requires a 48-volt electrical system to function. It utilizes an electronically actuated bypass valve that functions like a throttle body, allowing the electric compressor to disengage and be bypassed once the engine reaches a high enough RPM and the regular turbochargers take over.
Technical specifications and prototype development
The eBoost Air technology moved from an idea to a working prototype in seven weeks. SRT demonstrated the prototype in a Jeep Grand Cherokee featuring a carbon-fiber, cowl-induction hood.
The eBoost Air system differs from Porsche's technology, as Porsche uses an MGU to directly spin the turbo, whereas the SRT device force-feeds air to the turbos.
There is no downside to the system.
— Stellantis executive Tim Kuniskis
A project executive said the prototype eBoost Air system added nearly 100 horsepower. Another project executive stated the prototype system added 90 horsepower, suggesting the 550-hp engine would reach 640 hp.
30 psi
Current peak boost for Dodge's Hurricane High Output engine
The high-output variant of the 3.0-liter Hurricane inline-six engine is cited with varying specifications. Some sources list the engine as producing 550 hp (410 kW) and 531 lb-ft (720 Nm) of torque, while others list it at 540 horsepower and 510 lb-ft of torque. The eBoost Air compressor remains a concept and is not yet a production-ready design.
Updates
The eBoost Air system, described by SRT as a rapid-development proof of concept, is designed to enable larger turbochargers for increased power without worsening lag, and was prototype-installed in a Jeep Grand Cherokee with a prominent airbox; while it aims for a broader, more linear powerband and may be more cost-effective than Porsche’s hybrid system due to Stellantis’ engine bay layouts, it does not recover spent energy, and its role in boosting peak power—rather than merely reducing lag—remains disputed.
The eBoost Air system, described by SRT as a rapid-development proof of concept, is designed to enable larger turbochargers for increased power without worsening lag, and was prototype-installed in a Jeep Grand Cherokee with a dedicated airbox; while it promises a broader, more linear powerband and potential cost advantages over Porsche’s hybrid system due to Stellantis engine bay layouts, it does not recover spent energy, and claims that its primary goal is accelerating power delivery rather than adding output remain disputed.
The eBoost Air system, currently paired with a prototype of Stellantis' 3.0-liter Hurricane inline-six, is designed to enable larger turbochargers without increasing lag, delivering a broader, more linear powerband that mimics supercharged V8 response—though it does not recuperate energy and requires a standalone electric compressor mounted in the intake stream, separate from exhaust-driven turbos; Stellantis’ revived SRT division, not active since 2021, developed the prototype installed in a Jeep Grand Cherokee, with Ram claiming it makes the Hurricane engine deliver power 'more directly and fiercely,' while experts note Mercedes-AMG, Porsche, Audi, and Ferrari have previously employed类似技术.
