Hlava Technologies develops advanced boost-management systems for modern internal combustion platforms.
Our flagship architecture, the Hlava Sequential Turbocharging Manifold, enables immediate response and sustained airflow without high-voltage dependency or complex electronic control stacks.
Designed for regulatory reality. Engineered for platform scalability.
OEM programs operate under increasing pressure across multiple domains simultaneously.
Boost systems now must deliver transient responsiveness, durability, reliability and cost control simultaneously.
A patented mechanical exhaust-energy routing system that biases upstream pressure and mass flow to eliminate staged transition events.
The STM biases upstream pressure and mass flow to eliminate staged transition events. Mechanical simplicity remains intact. No electronics, sensors, or ECU control required.
Technical comparison across current forced induction architectures.
Series A capital deployment is milestone-driven and aligned with OEM sourcing gate requirements — covering supplier-owned validation, manufacturing readiness, and integration preparation. Full capital allocation and program roadmap available in the Investor Overview.
Hlava Technologies is raising a $15M Series A to complete supplier-owned validation, manufacturing readiness, and OEM integration preparation for the Hlava Sequential Turbocharging Manifold platform. Capital deployment is milestone-driven and aligned with OEM sourcing gates.
Request Investor MaterialsTwo broad U.S. utility patents covering the manifold design and the exhaust gas control method between turbochargers. Architecture-level protection — not design-level.
Any system using two different frame size turbochargers with a bridge pipe directing exhaust gas from primary to secondary and bypass valves to control flow falls within the patent claims.
Primary long-term revenue through platform licensing and hardware supply agreements with OEM manufacturers and Tier-1 suppliers.
Near-term revenue providing real-world validation data and market proof points for OEM conversations.
Milestone-driven capital deployment aligned with OEM sourcing gate requirements.
Supplier-owned dyno validation. Emissions-grade instrumentation. Engine transient response characterization. Complete data ownership for OEM sourcing gate submissions.
Investment casting transition. APQP process development. PPAP pathway defined. Cost-down validation against target BOM. Manufacturability confirmed at production volumes.
OEM sourcing gate submission with complete validation package. Tier-1 supplier partnership. Vehicle integration and calibration support. Platform nomination and licensing execution.
Multiple simultaneous forces are compelling OEMs to solve the same forced induction problem the STM already addresses.
Tightening transient emissions requirements push manufacturers toward forced induction solutions that deliver boost at lower loads and throttle positions. The STM produces usable boost at 40-60% throttle — exactly the operating range where transient emissions limits matter most.
CAFE standards require efficiency gains across vehicle fleets. Downsized turbocharged engines need immediate response across partial-throttle conditions. The STM enables smaller displacement engines to deliver full-size power delivery without efficiency penalties.
Variable geometry turbos cost $2,500-$4,500 per unit and face reliability issues from carbon buildup and heat-related actuator failures. Electrified turbochargers add HV system dependency and thermal management complexity without solving the core transient response problem.
As EV adoption expands, ICE engines must justify their presence with superior performance and efficiency. OEM platforms carrying ICE powertrains through the transition period need forced induction solutions that differentiate on performance without adding electronic complexity or cost.
Two issued utility patents. Functional validation on 3.1L V6 platform. ECU and dyno data on file. Operating principles follow established gas law relationships.
Capital deployed in milestone-gated tranches. No capital at risk ahead of validation checkpoints. Manufacturing transition proceeds only after data confirms production readiness.
Aftermarket channel generates revenue and real-world data concurrently. Supplier-owned validation provides iteration speed and data integrity independent of OEM schedules.
Architecture-level utility patent protection creates meaningful barriers. Turbo-agnostic design allows Tier-1 partners to source turbocharger components independently.
Engineering data packages and financial projections available under NDA.
Request Investor MaterialsThe Hlava STM is an active gas-dynamic exhaust-energy management device. It routes and biases exhaust mass flow between a small-frame primary turbocharger and a large-frame secondary through intelligently designed bypass valves responding to system pressure and temperature.
| Dimensions | 6.5" H × 11.75" L × 4.5" W |
| # of Integrated Bypass Valves | Two |
| Weight | Under 20 lbs |
| Material | High-Temp Stainless Steel Casting |
| Exhaust Inlet | 2.5" standard |
| Bridge Pipe | Full 3" bore |
| Config | Left / Right-hand |
The Hlava STM manages exhaust flow between two turbochargers using a mechanical manifold architecture and a controlled valve strategy.
In practical terms, the gas-law relationships explain why the STM can use upstream manifold pressure and/or first turbo speed as reliable physical signals for valve actuation timing.
| P | exhaust pressure |
| V | effective local volume |
| m | gas mass in that region |
| Rₛ | specific gas constant |
| T | absolute temperature |
Short-interval approximation when temperature is roughly constant.
Used when pressure is roughly constant.
Highly relevant to upstream manifold pressure behavior.
| Pᵤ₁ | pressure upstream of first turbo |
| mᵤ₁ | gas mass in upstream region |
| Tᵤ₁ | upstream exhaust temperature |
| Vᵤ₁ | effective upstream control volume |
| uᵥ | valve open command/state |
| N₁ | first turbo speed |
| N₁,ₜℎ | calibrated speed threshold |
| Pᵤ₁,ₜℎ | calibrated upstream pressure threshold |
The STM validation program is structured to support standard OEM sourcing gate requirements.
Single point of technical ownership. Supplier-owned testing provides iteration speed and data integrity.
Engineering data packages available under NDA.
Engineering InquiryThe Hlava STM integrates across multiple engine categories. The architecture remains turbocharger-agnostic within sizing constraints and supports flexible packaging strategies.
The Hlava STM is not designed for a single platform or fuel type. The architecture adapts across gasoline, diesel, hydrogen, and alternative fuel engines — in any application where forced induction is present.
The STM operates across all combustion fuel types. The architecture does not require fuel-specific tuning or modification to the manifold itself.
The STM accepts turbochargers from any manufacturer. The architecture does not require proprietary components. You source the turbochargers that fit your application — the STM governs how they work together.
Engine management system integration is not required for the STM to operate. The bypass valves respond to exhaust gas pressure, temperature, and volume — governed by physics, not software.
Validated on a 3.1L V6 platform. The architecture scales across engine displacements and cylinder configurations. Turbocharger sizing selection determines the operating range — not the engine architecture.
Boost is achievable at 40-60% throttle across all gears. The STM delivers usable power across the full operating range — not only at wide-open throttle or under forced downshift conditions.
Partial-throttle boost delivery supports transient emissions compliance under EPA Tier 4 Final and Euro 7 standards. All exhaust gas contributes to turbine work — no bypass losses to atmosphere.
The STM accepts turbochargers from any manufacturer within the sizing constraints defined by application requirements.
Multiple configurations to accommodate varied engine bay constraints and installation requirements.
Two U.S. utility patents (US11,859,525 and US12,228,069). High-temperature stainless steel construction. Mechanical actuation. Validated on multiple turbocharger configurations including Garrett G30-900 and G35-1050 series.
For enthusiast and performance shop applications, the Hlava STM is available through the aftermarket division with direct technical support from the inventor.
Hlava Technologies advances mechanical energy-management systems for modern internal combustion platforms operating under regulatory and cost constraints.
Founded to bring the Hlava Sequential Turbocharging Manifold to OEM scale, a mechanical architecture that solves a long-standing forced induction engineering problem through thermodynamic physics rather than electronic complexity.
We focus on architecture, validation, and manufacturability. Validation precedes commercialization. Supplier-owned data supports program eligibility.
| Entity | C-Corporation |
| Location | Naperville, Illinois |
| Industry | Advanced Propulsion Systems |
| Stage | Pre-revenue / Series A |
| IP | 2 U.S. Utility Patents |
| Flagship | Hlava STM |
Andrew Hlava has worked in the automotive industry since 2004. In 2013, he got frustrated every time he drove a turbocharged car. The industry kept offering the same compromises: small turbo for response, large turbo for power. Both in one system was considered impossible.
Every major manufacturer had tried. Porsche with the 959. Mazda with the RX-7. Toyota with the Supra. Each attempt failed because controlling exhaust flow between two differently-sized turbos without restrictive plumbing defeated everyone. By the 2000s, the industry moved on.
Andrew did not move on. He spent 12 years and over $250,000 of his own money working through the engineering complexity. Countless prototypes. Real problems solved one at a time. The breakthrough came from working with thermodynamics instead of fighting it — two integrated full-flow valves positioned to capitalize on exhaust gas pressure and volume changes, governed entirely by physics.
The result is two issued U.S. utility patents and the first commercially viable sequential turbocharging system designed for universal application. Andrew continues to develop advanced applications of the technology while building partnerships for commercial-scale production.
| Industry Since | 2004 |
| STM Development Start | 2013 |
| Personal R&D Investment | $250,000+ |
| Development Years | 12 |
| Patents Issued | 2 U.S. Utility |
| Headquarters | Naperville, Illinois |
Andrew provides direct technical support with every purchase and is available for engineering inquiry and OEM program discussions.
(773) 426-0088Exhaust energy lost to backpressure and pulse interference is unavailable for turbine work. The STM architecture routes and biases exhaust flow to preserve enthalpy through the transient response window.
Electronic control stacks expand calibration scope and introduce atmospheric sensitivity. Mechanical actuation tied to gas law physics eliminates ECU inputs and reduces operating domain calibration requirements.
Electrified boost systems introduce HV dependency, expanded BOM cost, and thermal management requirements. The STM eliminates this dependency while delivering equivalent or superior transient performance.
The turbo-agnostic architecture and configurable spring pressure actuation allow the STM to adapt across gasoline, diesel, hydrogen, and alternative fuel platforms without design-level changes.
The STM platform is protected by two issued U.S. utility patents — US11,859,525 (January 2024) and US12,228,069 (February 2025) — covering the sequential exhaust flow control apparatus and the exhaust gas control method between turbochargers. Protection is at the architecture level, not the design level.
For program discussion, validation collaboration, and technical data review. Engineering data packages available under NDA.
For Series A capital discussions, milestone tracking, and capital structure review.
Naperville, Illinois, United States
Hlava Technologies, Inc.