Why Upgrade Your Kia Stinger 3.3T Turbo?

The Kia Stinger 3.3T, with its twin-turbocharged V6, is already a performance bargain. However, the factory turbochargers are designed for a broad efficiency range and emissions compliance. A dedicated turbo upgrade unlocks the engine’s true potential, delivering dramatic gains in horsepower and torque while improving throttle response. Whether you’re chasing quarter-mile times or building a daily-driven sleeper, upgrading the turbos is one of the most impactful modifications you can make.

Modern turbo upgrade kits are engineered to work with the Stinger’s direct-injection Lambda II engine, often supporting 500–700 wheel horsepower with proper supporting mods. Beyond raw power, these upgrades improve spool characteristics, reduce heat soak, and provide a more linear powerband that is easier to control on the street or track.

Here are the primary benefits you can expect:

  • Gains of 100–250+ wheel horsepower depending on turbo size and supporting modifications
  • Increased torque across the mid-range, reducing the need to downshift
  • Faster spool and reduced lag compared to factory units when paired with the correct wastegate control
  • Improved reliability through upgraded bearings, billet compressor wheels, and better cooling
  • Enhanced engine sound with a more aggressive turbo whistle and blow-off
  • Foundation for future upgrades (e.g., port injection, methanol injection, larger fuel pumps)

Top Brands for Kia Stinger 3.3T Turbo Upgrades

The aftermarket has responded to the Stinger community with several well-engineered options. Below are the most respected brands, each with a distinct approach to power delivery, packaging, and price.

1. Lap3 Performance

Lap3 is one of the most recognized names in the Stinger tuning scene, known for comprehensive turbo systems that include billet wheels, ported housings, and high-flow wastegates. Their “Big Turbo” kits are designed for those who want a no-compromise solution.

  • Billet compressor wheels – machined from 6061 aluminum for strength and aerodynamics
  • Larger turbine housings – reduce backpressure and improve top-end flow
  • Complete installation package – includes everything from gaskets to hardware
  • Custom tuning required – Lap3 works closely with EK1 and JB4 tuners

Best for: Enthusiasts targeting 600+ wheel horsepower with streetable spool characteristics.

2. MST Performance

MST (MST Performance) builds on their reputation from the Genesis and Stinger communities. Their turbo upgrade balances daily drivability with significant power gains, often using hybrid-style upgrades that retain factory turbine housings but improve internal flow.

  • Drop-in design – no major modifications required to engine bay
  • Silicon couplers and heat-reflective blankets – included in the kit
  • Upgraded actuator – precise boost control to avoid overboost
  • Proven 500+ whp setups – with recommended fueling upgrades

Best for: Owners who want a reliable, plug-and-play upgrade without sacrificing daily manners.

3. Pure Turbos

Pure Turbos is a well-known supplier for many platforms, and their Stinger 3.3T kit uses billet compressor wheels and a unique “Housing Divider” design to improve flow under high boost. Their units are paired with larger inlet pipes and high-quality seals.

  • Billet 11-blade compressor wheel – optimized for high boost pressures
  • Heavy-duty thrust bearing – extends turbo life under sustained load
  • Precision balanced – each unit is EDM balanced to 50,000 RPM
  • Compatible with factory oil and coolant lines – reduces installation complexity

Best for: Track-day cars and drag racing builds that demand consistent high-rpm power.

4. Boomba Racing

Boomba Racing is a staple in the Kia performance world, and their turbo upgrade focuses on affordability without cutting corners. Their kits often include billet compressor wheels and upgraded wastegates, and they are known for excellent customer support and community involvement.

  • Competitive pricing – often the most affordable option from a known brand
  • Complete hardware kit – includes all new gaskets, O-rings, and bolts
  • Billet wheel upgrade – matched to factory turbine for easy fitment
  • Support for custom tuning – recommended ECUs include JB4 and EK1

Best for: Budget-conscious builders who still demand genuine quality and support.

5. HKS (Japan) – Super Turbo Kit (Coming Soon / Limited)

HKS has a legendary reputation, and their Stinger-specific kit (often imported or custom ordered) uses their renowned Super Turbo technology. This kit features a unique wastegate layout and flow-optimized turbine housings.

  • HKS GTIII-S turbine – known for quick spool and high efficiency
  • Lightweight cast iron manifold – reduces thermal fatigue
  • HKS EVC boost controller compatibility – advanced boost management
  • Limited availability – often requires direct import or special order

Best for: JDM-purist enthusiasts who want the absolute best in engineering pedigree.

Factors to Consider When Choosing a Turbo Upgrade Kit

Selecting the right kit involves more than just horsepower numbers. Here are the key factors to evaluate before making a purchase.

Performance Goals

Determine your target horsepower level. Entry-level hybrids often support 450–520 whp on pump gas with mild ethanol blends. Stage 2 or “big turbo” kits push 550–700+ whp but require injection upgrades and a built engine for reliability at the top end. Be realistic about your usage: daily drivers rarely need more than 600 whp unless you’re attending track events regularly.

Fuel System Capabilities

The stock fuel system (high-pressure fuel pump and injectors) becomes a limitation around 480–520 whp. Upgraded turbo kits often require a second fuel pump, larger injectors, or port injection. Check if the turbo kit includes fuel system recommendations or if you need to purchase them separately.

Installation Complexity

Some kits are “drop-in,” meaning you can reuse existing hot pipes and charge pipes, while others require custom fabrication or relocation of ancillary components. Consider your mechanical skill level or the cost of professional installation. Kits that require engine removal for turbine housing swaps will significantly increase labor time.

Boost Control Strategy

Factory boost control via the ECM may not be optimal for larger turbos. Many Stinger owners use a JB4 tuner with respective firmware or an EK1 flash tune to manage boost, timing, and fueling. Confirm that the turbo kit is compatible with your preferred tuning platform. Some brands offer their own boost controllers or actuators.

Warranty and Support

High-quality brands typically offer a limited warranty (1–2 years) on turbo units. Check reviews for responsiveness of customer support, especially regarding sizing questions or warranty claims. Community forums like StingerForum.org and KiaStinger.org are good places to read real-world experiences.

Future Expansion

If you plan to chase higher power later, choose a turbo kit that is scalable with future fuel or engine upgrades. A turbine housing that is too small will choke high-rpm power, too large will create lag. Many builders start with a hybrid kit then sell it to upgrade to a full-frame turbo – plan ahead to save money.

Installation and Tuning Guide

Turbo upgrade installation is a significant project. Below is a high-level overview of the steps and considerations.

  • Remove stock turbos – requires removing the intake manifolds, coolant lines, and exhaust downpipes. Budget a full weekend for a first-time install.
  • Inspect oil drain lines – upgraded turbos often have different bolt patterns or fittings; verify kit includes adapters.
  • Upgrade wastegate actuators – many kits include new actuators to control boost without creep.
  • Replace gaskets and crush washers – use OEM or high-temperature aftermarket parts to prevent leaks.
  • Install upgraded intake and intercooler – the stock intercooler will pressure drop quickly with higher boost; a front-mount upgrade is highly recommended.
  • Re-tune – at a minimum, load a base map from the turbo kit supplier. Strongly consider a custom dyno tune by a Stinger specialist for optimal safety and performance.

Professional installation at a performance shop experienced with Lambda engines typically costs between $1,500–$3,500 depending on the kit complexity and region.

Estimated Costs and Budget

Turbo upgrade costs vary widely. Entry-level hybrid kits start around $1,800–$2,500. Full big-turbo kits with billet wheels and larger housings range from $3,500–$6,000. Factor in additional expenses:

  • Tuning (JB4 + EK1 or standalone ECU) – $600–$1,500
  • Fuel system upgrades – $600–$2,000
  • Intercooler upgrade – $400–$1,000
  • Professional installation – $1,500–$3,500
  • Supporting mods (spark plugs, oil catch can, high-performance coolant) – $200–$500

A complete, reliable 500–600 whp build with a reputable turbo kit can be achieved for approximately $5,000–$8,000 including labor. Pushing beyond 650 whp quickly escalates costs due to engine oiling upgrades and transmission reinforcement.

Conclusion

The Kia Stinger 3.3T turbo upgrade is one of the most rewarding modifications you can make. Brands like Lap3, MST, Pure Turbos, Boomba Racing, and HKS each offer distinct advantages depending on your power goals, budget, and desire for complexity. By carefully evaluating your performance targets, fuel system needs, installation capabilities, and future plans, you can select a kit that transforms your Stinger into a capable, thrilling performance machine without sacrificing daily drivability.

Always work with a reputable tuner and use quality supporting components to protect your investment. With the right setup, your upgraded Stinger will surprise much more expensive exotics on the street or the strip.