After extensive research into manufacturer specifications, published performance data, and aggregated owner feedback from forums and review sites, we have evaluated the top turbochargers for the SR20DET engine. Our goal is to help you match a turbo to your power goals and driving style, whether you’re building a street car, track weapon, or drift machine. Each pick includes honest limitations and who should skip it.
| Photo | Product | Score | Buy |
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Garrett GT2871R .64 A/R Best Overall T3 flange, 56 trim compressor, 84 trim turbine, .64 A/R turbine housing |
9.0 | 🛒 Check Price |
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BorgWarner EFR 6758 Top Tech T25/T28 flange, 58mm compressor, EFR turbine, integrated recirculation valve |
8.7 | 🛒 Check Price |
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Precision Turbo 5857 Gen2 Best for Track T3/T4 flange, 57mm compressor, 76mm turbine, .63 A/R |
8.4 | 🛒 Check Price |
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Garrett GT3076R .63 A/R High Power Street T3 flange, 76mm compressor, 84 trim turbine, .63 A/R turbine housing |
8.1 | 🛒 Check Price |
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Kinugawa TD06 20G Budget Power T3 flange, 68mm compressor, 76mm turbine, journal bearing, 8 psi wastegate |
7.8 | 🛒 Check Price |
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Mamba TD05H 16G Budget Street T3 flange, 56 trim compressor, 68 trim turbine, journal bearing, .63 A/R |
7.3 | 🛒 Check Price |
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CX Racing T28 Turbo Budget OEM+ T25/T28 flange, 60 trim compressor, 62 trim turbine, journal bearing, .64 A/R |
7.0 | 🛒 Check Price |
1. Garrett GT2871R .64 A/R: Best Overall
The Garrett GT2871R is a legendary choice for SR20DET builds aiming for 300-400 whp. In our evaluation of owner feedback and spec sheets, it delivers a broad powerband with strong mid-range torque. The dual ball bearing journal ensures durability even under sustained high-rpm use. However, some owners report that the internal wastegate actuator struggles to hold boost above 20 psi, requiring an external gate for higher power targets.
This turbo is ideal for street-driven cars that need quick spool and reliable daily performance. If you’re chasing over 450 whp or plan to run sustained high boost on track, consider a larger frame turbo with an external wastegate setup.
- Proven 300-400 whp range on SR20DET with proper supporting mods
- Fast spool with minimal lag, great for street and drift
- Dual ball bearing center section for long life
Pros: Excellent spool characteristics; Widely supported with aftermarket parts
Cons: Wastegate actuator can be inconsistent at high boost
2. BorgWarner EFR 6758: Top Tech
The BorgWarner EFR 6758 represents cutting-edge turbo technology. Our research shows that its gamma-Ti turbine wheel and billet compressor offer outstanding durability and efficiency. The integrated recirculation valve and wastegate simplify installation, making it a favorite for high-end builds. However, owner feedback indicates that the cost is significantly higher than comparable turbos, and replacement parts are expensive.
This turbo is perfect for enthusiasts who want the latest technology and are willing to invest in top-tier components. If budget is a primary concern or you are building a lower-horsepower street car, a more cost-effective option like the GT2871R may be better.
- Advanced EFR technology with billet compressor wheel
- Integrated recirculation valve simplifies plumbing
- High efficiency for quick response and low backpressure
Pros: Exceptional durability with gamma-Ti turbine wheel; Integrated features reduce installation complexity
Cons: Premium price point
3. Precision Turbo 5857 Gen2: Best for Track
The Precision Turbo 5857 Gen2 is a popular choice for SR20DET track cars targeting 400-500 whp. Based on manufacturer specs and owner reports, it offers a solid powerband with excellent top-end pull. The Gen2 ball bearing upgrade improves spool over older journal bearing versions, but it still lags behind the GT2871R below 3500 RPM. Some users note that the cast compressor wheel is less efficient than billet options at extreme boost levels.
This turbo suits track-oriented builds where high-rpm power is prioritized. If you need quick spool for street driving or drifting, a smaller turbo like the GT2871R will be more satisfying.
- Capable of 400-500 whp with proper supporting mods
- Gen2 ball bearing cartridge for faster spool
- Cast compressor wheel proven for high boost
Pros: Strong top-end power potential; Good value for the power level
Cons: Spool is slower than smaller frame turbos
4. Garrett GT3076R .63 A/R: High Power Street
The Garrett GT3076R is a classic choice for SR20DET builds aiming for 450+ whp. Our evaluation of spec sheets and owner feedback confirms it delivers strong top-end power and can handle sustained high boost. However, the larger compressor wheel results in noticeable lag, making it less suitable for street driving or tight courses. Some owners also report that the .63 A/R turbine housing can create a boost creep issue on high-flow setups.
This turbo is best for dedicated high-horsepower builds that see mostly highway or drag strip use. If you want a responsive street car, look at the GT2871R or EFR 6758.
- Supports 450-550 whp on built SR20DET
- Dual ball bearing for high-rpm reliability
- Proven in many high-horsepower builds
Pros: Excellent top-end power; High durability at high boost levels
Cons: Significant lag below 4000 RPM
5. Kinugawa TD06 20G: Budget Power
The Kinugawa TD06 20G offers a budget-friendly path to 350-450 whp. Based on aggregated owner feedback, it provides decent power for the price but comes with compromises. The journal bearing is less durable than ball bearings and needs more frequent oil changes to avoid failure. Some users report inconsistent boost control and a tendency to creep with free-flowing exhausts.
This turbo is a good entry-level option for budget-conscious builders who are comfortable with maintenance. If you plan to push the turbo hard or want long-term reliability, invest in a ball bearing unit like the Garrett or BorgWarner.
- Affordable option for 350-450 whp
- Journal bearing design with oil and water cooling
- Compatible with stock SR20DET manifold with adapter
Pros: Low cost for the power level; Widely available
Cons: Journal bearing requires stricter oil change intervals
6. Mamba TD05H 16G: Budget Street
The Mamba TD05H 16G is a low-cost turbo suited for mild SR20DET builds targeting 250-350 whp. Owner feedback indicates it spools quickly and is easy to install, but durability is a concern. Many users report bearing failure within 10,000 miles, especially if oil changes are neglected. The lack of water cooling also makes it more prone to heat soak in hot climates.
This turbo is acceptable for a budget street car that sees limited mileage and low boost. If you plan to track the car or run higher boost, skip this and choose a more robust unit like the GT2871R.
- Inexpensive option for 250-350 whp
- Compact size for easy fitment
- Oil cooled only, no water lines needed
Pros: Very affordable; Quick spool for street use
Cons: Lower power ceiling than larger turbos
7. CX Racing T28 Turbo: Budget OEM+
The CX Racing T28 is a budget replacement for the stock T25 turbo. It offers a modest power increase to around 300 whp. However, our research and owner feedback reveal frequent quality control issues, including shaft play out of the box and premature seal failure. Many buyers report needing to rebuild the turbo shortly after installation. The journal bearing also limits sustained high-rpm use.
This turbo is only recommended for those on an extremely tight budget who are willing to gamble on reliability. For a dependable daily driver, invest in a higher-quality unit like the Garrett GT2871R.
- Direct bolt-on for SR20DET T25 flange
- Low cost for a quick upgrade over stock T25
- Good for 250-320 whp at moderate boost
Pros: Simple bolt-on replacement; Very cheap
Cons: Inconsistent quality control
Frequently Asked Questions
What is the best turbo for a stock SR20DET?
For a stock SR20DET, the Garrett GT2871R with .64 A/R is widely considered the best upgrade. It spools quickly and can safely produce 300-350 whp with supporting mods like injectors and a tune, without exceeding the engine’s stock limits.
Do I need to upgrade my fuel system for a bigger turbo?
Yes, upgrading the turbo beyond the stock T25 requires larger fuel injectors, a high-flow fuel pump, and a tune. For turbos like the GT2871R, 550cc injectors and a Walbro 255lph pump are common. For larger units, 740cc+ injectors may be needed.
What is the difference between journal bearing and ball bearing turbos?
Ball bearing turbos use rolling elements for lower friction, resulting in faster spool and better transient response. They are more durable under high heat and rpm but cost more. Journal bearing turbos are cheaper but have more friction, slower spool, and require stricter oil maintenance.
Can I use a T3 flange turbo on a stock SR20DET manifold?
Most T3 flange turbos require an aftermarket manifold or an adapter plate. The stock SR20DET manifold uses a T25 flange. Some turbos like the Garrett GT2871R are available in T25 flange versions, while others like the GT3076R need a T3 manifold.
How much horsepower can a built SR20DET handle with a big turbo?
A built SR20DET with forged internals can handle 500-600 whp with a turbo like the Garrett GT3076R or Precision 5857. For 600+ whp, consider a GT35R or BorgWarner S300 series, but be aware of increased lag and driveline stress.
Our Verdict
After comparing specs and owner feedback, the Garrett GT2871R .64 A/R is our top pick for its excellent balance of spool, power, and reliability. For those seeking cutting-edge technology, the BorgWarner EFR 6758 is a strong runner-up, offering superior durability and integrated features at a higher cost.
