The Subaru BRZ: A Platform Built for Boost

The Subaru BRZ (and its twin, the Toyota GR86) is celebrated for its near-perfect 50:50 weight distribution, low center of gravity, and nimble handling. However, its 2.0-liter FA20 naturally aspirated engine, while smooth and rev-happy, leaves many enthusiasts wanting more power. For those who track their cars or simply crave stronger acceleration on the street, turbocharging remains the most effective path to significant horsepower gains.

Choosing the right turbo kit requires balancing power targets, drivability, and budget. This guide explores the top five BRZ turbo kits from APS, BorgWarner, and Garrett, providing detailed analysis to help you make an informed decision. Whether you are building a weekend track weapon or a daily driver with serious punch, these kits represent the best in reliability and performance.

Key Considerations Before Selecting a Turbo Kit for Your BRZ

Power Targets & drivability

Street-driven BRZs typically thrive with 300–400 whp, offering strong mid-range pull without overwhelming the chassis or drivetrain. Track-focused builds may push toward 500+ whp, but this requires extensive supporting modifications — forged internals, upgraded fuel system, and heavy-duty clutch. All kits listed below are capable of street-friendly power levels with proper tuning.

Installation Complexity

Some kits are true bolt-on, requiring minimal fabrication; others require custom downpipes, oil lines, or intercooler piping. Unless you have significant fabrication skills, factor in professional installation costs. Additionally, a quality tune — ideally via EcuTek or OpenFlash — is mandatory for reliability and performance.

Supporting Modifications

No turbo kit works alone. A robust fuel system (injectors, pump, often a return-style setup), upgraded radiator and oil cooler, and a boost controller are essential. For power above 400 whp, consider forged connecting rods and pistons, a stronger transmission (often STI six-speed swap), and a proper differential cooler for track use.

1. APS BRZ Turbo Kit

APS (Australian Performance Systems) has long been a trusted name in Subaru turbocharging. Their BRZ kit is engineered for straightforward installation and excellent drive quality, making it a top choice for street-focused builds.

Key Specifications

  • Power Output: Up to 350 whp on pump gas with conservative tuning; higher with E85.
  • Turbocharger: Garrett GT2860RS (Disco Potato) or optional largest frame.
  • Included Components: Cast-iron manifold, GT-series turbo, bar-and-plate intercooler, blow-off valve, oil feed/drain lines, gaskets, and hardware.

Strengths

The APS kit is well-known for its complete, bolt-on nature. No cutting, welding, or relocation of components is required — a factory-like fitment. The GT2860RS offers quick spool, reaching full boost by 3,500 RPM, which translates to effortless merging and passing. Driveability remains excellent, with linear power delivery that does not overwhelm the chassis.

Trade-Offs

The power ceiling is limited if you plan to go beyond 350 whp. The small-frame turbo runs out of steam at higher RPMs, and the factory-style manifold constrains flow. For mild street builds, this is not an issue, but serious track cars may outgrow this kit.

Installation & Tuning

Expect 8–12 hours for DIY installation; professional shops can do it in a day. EcuTek tuning is recommended for the best results. Add a quality cat-back exhaust for maximum flow.

Price Range: ~$3,500–$4,200 (depending on turbo option).

2. BorgWarner EFR Turbo Kit (Full-Race, 1320 Performance, etc.)

The BorgWarner EFR (Engineered For Reliability) series is the gold standard for modern turbocharging. Its advanced features — twin-scroll turbine housing, integrated wastegate, and ceramic ball bearings — make it an excellent choice for both street and track. Several fabricators offer complete kits using EFR turbos; we are evaluating the most common package.

Key Specifications

  • Power Output: 400–500 whp depending on EFR model (typically EFR 7670 or 8374).
  • Turbo: BorgWarner EFR with twin-scroll T4 flange.
  • Included Components: Custom tubular manifold (often TIG-welded stainless), front-mount intercooler, blow-off valve, oil and coolant lines, downpipe, and all hardware.

Strengths

The EFR’s twin-scroll design dramatically reduces turbo lag and improves transient response, crucial for track driving where you need immediate power coming out of corners. The integrated wastegate simplifies boost control and reduces failure points. Lightweight titanium-aluminide turbine wheels spool quickly while handling high exhaust gas temperatures. With a quality tune, the EFR delivers linear, responsive power across a broad RPM range.

Trade-Offs

Cost is the primary drawback — these kits are significantly more expensive. Installation is not completely bolt-on; the custom manifold may require minor adjustments to fit certain headers or A/C lines. Additionally, the EFR’s performance potential demands upgraded fueling and often internal engine reinforcement above 450 whp.

Installation & Tuning

Professional installation is strongly recommended (10–20 hours of labor). Custom engine management and dyno tuning are mandatory. For track use, pair with an oil cooler and large radiator.

Price Range: ~$5,000–$6,500 (kit plus turbo).

3. Garrett GT2860RS / GTX2867R Turbo Kit (Standard Size)

Garrett is the world’s most recognized turbo manufacturer, and their GT2860RS (Disco Potato) and the newer GTX2867R offer a near-ideal balance for a street BRZ. Many smaller fabricators produce kits around these turbos; we cover the typical configuration.

Key Specifications

  • Power Output: Up to 350 whp (GT2860RS) or 400+ whp (GTX2867R) with good tuning.
  • Turbo: Garrett GT2860RS or GTX2867R (dual ball-bearing).
  • Included Components: Cast or fabricated manifold, intercooler (bar-and-plate), oil lines, downpipe, intake piping, and gaskets.

Strengths

The Garrett GTX2867R represents a significant improvement over the older GT2860RS. Its billet compressor wheel and advanced aerodynamics provide faster spool (full boost by 3,200 RPM) and higher flow capacity. The dual ball-bearing center section ensures long life even under track conditions. These kits are generally well-priced and offer excellent value for the performance gain. The power delivery remains smooth and progressive, making the car easy to control on the limit.

Trade-Offs

At power levels above 400 whp, the compressor efficiency drops off. The internal wastegate (larger options) can be a limiting factor for high boost on the track — an external wastegate upgrade is recommended for serious track use. Additionally, the manifold may not be as robust as a full-custom unit, so inspect studs and flanges regularly.

Installation & Tuning

Bolt-on with moderate DIY skill; many kits come with step-by-step instructions. Tuning via EcuTek or Cobb Accessport (with custom calibration) is essential. For track longevity, upgrade the oil cooler and consider a larger radiator.

Price Range: ~$3,000–$4,500 (complete kit).

4. APS 20G Turbo Kit (Large Frame Upgrade)

For BRZ owners who want to chase higher numbers, the APS 20G kit uses a larger journal-bearing turbo with a bigger compressor wheel, capable of exceeding 400 whp without sacrificing drive quality entirely. This is a popular option for those who plan to build their engine later.

Key Specifications

  • Power Output: 400–450 whp with good fuel and tuning.
  • Turbo: APS 20G (based on TD06SL2 / 20G compressor).
  • Included Components: Large bar-and-plate intercooler, high-flow manifold, blow-off valve, oil and coolant lines, downpipe, and uprated fuel injectors (often included).

Strengths

The 20G compressor moves significantly more air than the standard GT2860RS, allowing for higher horsepower with the right supporting mods. The kit often comes with larger injectors and a tune base map, simplifying the initial setup. It can still drive well if you keep the boost moderate, and the power delivery is more aggressive — excellent for drag racing or open track days with long straights.

Trade-Offs

Boost threshold is higher, meaning spool is delayed to around 3,800–4,000 RPM, which can make the car feel laggy in tight corners compared to smaller turbos. The journal bearing is less durable under sustained high boost on a road course. You will almost certainly need forged internals if you plan to run 20+ psi continuously. The kit is heavier and generates more heat, requiring upgraded cooling systems.

Installation & Tuning

Professional installation is highly recommended (12–16 hours). The kit may require modifications to the A/C lines and some trimming of the shroud. Tuning should be done on a dyno with wideband monitoring. An external wastegate is a worthwhile upgrade for better boost control and heat management.

Price Range: ~$4,000–$5,000 (complete kit).

5. Garrett GTX3582R / GTX3576R Turbo Kit (Big Power)

For enthusiasts seeking track capability above 500 whp, the Garrett GTX3582R (or GTX3576R) is the ultimate choice. These turbos are typically used in top-tier builds with fully forged engines, upgraded transmissions, and comprehensive cooling solutions. They represent the top end of the BRZ turbocharging spectrum.

Key Specifications

  • Power Output: 500–650 whp on race gas or E85 (with built engine).
  • Turbo: Garrett GTX3582R (82mm compressor, 76mm turbine) or GTX3576R.
  • Included Components: Custom equal-length tubular manifold, external wastegate (Tial or similar), large front-mount intercooler (4-inch core), full 3-inch downpipe and exhaust, oil cooler kit, and all necessary fittings. Fuel injectors and a fuel pump upgrade are often required.

Strengths

The GTX3582R’s billet compressor wheel and advanced aero deliver incredible airflow with excellent efficiency. At 20-25 psi, these turbos produce linear, brutal power from 4,000 RPM to redline, making the BRZ feel like a completely different car. The sound and response are intoxicating. For serious track work, this turbo can sustain high speed laps with proper cooling, and the power difference on the straights is massive.

Trade-Offs

Lag is present compared to smaller frames — full boost arrives around 4,500 RPM, which requires keeping the engine on boil. Installation is complex; you will need a custom intercooler piping, oil drain modifications, and likely a hood scoop or vent to manage heat. The stock engine cannot handle this power, so budget for forged pistons, rods, and a billet oil pump. The drivetrain (clutch, transmission, differential) also needs significant upgrades. This is not a daily-driven street kit; it is a full race conversion.

Installation & Tuning

This is a full custom fabrication job. Expect 30–50 hours of labor with a specialist shop. Tuning must be done on a dyno with extensive data logging. Engine management (MoTeC or EcuTek with custom firmware) is essential. For the track, invest in a large oil cooler, aluminum radiator, and a transmission cooler. Expect to spend $12,000–$20,000 for a complete, reliable build including the turbo system.

Price Range (kit only): ~$6,000–$8,000 (turbo and fabrication).

Comparison Overview

To help you decide, here is a quick comparison:

  • Best for Street & Daily: APS (GT2860RS) or Garrett GTX2867R kits — quick spool, affordable, reliable.
  • Best for Balanced Track/Street: BorgWarner EFR kit — excellent response, high power ceiling, premium quality.
  • Best for High-Power Street/Drag: APS 20G kit — more top-end power at a reasonable price.
  • Best for Extreme Track/Time Attack: Garrett GTX3582R kit — massive power but requires full build.

Essential Supporting Modifications for Any Turbo BRZ

Regardless of which kit you choose, these components are essential for reliability and performance:

  • Fuel System: Larger fuel injectors (750–1000cc), a high-flow fuel pump (Walbro 450 or similar), and a return-style regulation system for high boost.
  • Engine Management: Ecutek or MoTeC with professional tuning. A boost controller (electronic) is recommended for consistent boost levels.
  • Cooling: An oil cooler with at least 25-row core, a larger radiator (Koyo or Mishimoto), and optionally a remote thermostat for track use.
  • Clutch: Stage 2 or Stage 3 clutch (Exedy, ACT, Competition Clutch) to handle increased torque. For 400+ whp, consider a twin-disc setup.
  • Exhaust: A full 3-inch downpipe and cat-back exhaust to reduce backpressure. A high-flow cat is advisable for street legality.

For track-only builds, also consider a baffled oil pan, forged internals (pistons, rods), and a cooling system for the transmission and differential.

Conclusion

Selecting the right turbo kit for your Subaru BRZ boils down to your power goals, budget, and usage pattern. The APS and Garrett GTX2867R kits offer a fantastic blend of street manners and accessible performance. The BorgWarner EFR is ideal for enthusiasts who want the latest technology and are willing to invest more for superior response. For those chasing big horsepower, the APS 20G and Garrett GTX3582R deliver, but require a complete vehicle transformation. No matter which path you choose, invest in quality tuning and supporting modifications to unlock the BRZ’s full potential safely and reliably.

For further reading, check out APS Performance for more details on their kits, BorgWarner’s EFR series, and Garrett Motion for turbo specifications and options.