engine-modifications
Cost Breakdown: Upgrading Your Toyota 86 to 300 Hp with Turbo Kit Installations
Table of Contents
Understanding the Upgrade Path: From 200 HP to 300 HP
The Toyota 86 (also known as the Subaru BRZ or Scion FR-S) is a beloved light-weight rear-wheel-drive coupe, but its naturally aspirated 2.0-liter FA20 engine produces only about 200 horsepower at the crank. For many enthusiasts, 300 wheel horsepower is the sweet spot—it transforms the car into a genuinely fast machine without overwhelming the chassis or requiring a full drivetrain swap. Adding a turbocharger is the most common and effective route to reach this goal, but the costs can vary wildly depending on your choices. This expanded guide breaks down every dollar you’ll likely spend, from the turbo kit itself to the supporting modifications and hidden fees that often catch owners off guard.
Turbo Kit Choices: Entry-Level vs. High-End Systems
The turbo kit is the heart of your build, and prices range from budget-friendly kits designed for DIY enthusiasts to turnkey systems from established brands. Here is a detailed look at what you get at each price tier.
Entry-Level Kits ($2,500 – $3,500)
These kits typically include a smaller turbocharger (such as a Garrett GT2860RS or BorgWarner EFR 6258), a cast iron or mild steel manifold, a basic wastegate, blow-off valve, and all necessary piping. They are often designed for plug-and-play installation with minimal cutting. While they can reliably hit 300 crank horsepower, they may lack features like ball-bearing center housings or high-quality silicone couplers. Brands like CX Racing and SpeedFactory fall into this category. Expect to add your own intercooler and oil lines in some cases.
Mid-Range Kits ($3,500 – $5,000)
Mid-range kits from companies like GReddy, HKS, and Full-Race include a larger turbo option (e.g., GReddy T518Z, HKS GTII-SS or GTIII-RS) and often come with a high-quality bar-and-plate intercooler, TIG-welded stainless steel piping, and name-brand wastegates. These kits are easier to install because they include more components and better instructions. They also tend to have higher boost ceilings, allowing headroom for future upgrades like a larger fuel system or E85 tune.
High-End Kits ($5,000 – $7,000+)
Premium systems from PTE (Precision Turbo), ETS (Extreme Turbo Systems), or Gates often feature billet compressor wheels, journal or ball-bearing CHRAs, thick cast manifolds, and fully polished piping. Some include a dump tube, boost controller, and even a pre-loaded ECU tune. These are essentially “bolt-on and go” setups that maximize power and reliability. A high-end kit from Mishimoto or Koyorad paired with a Garrett G30-660 can reliably push 350+ whp with proper supporting mods, but the cost can exceed $7,000 just for the kit.
Labor Costs: DIY vs. Professional Installation
Turbo installation on a modern direct-injection engine like the FA20 is not a weekend project for the faint of heart. The process includes removing the intake manifold, replacing the exhaust manifold, routing oil and coolant lines, and re-wiring sensors. Professional labor rates for specialty JDM or performance shops range from $80 to $150 per hour, with most builds taking 10–15 hours. That translates to a labor bill of $800 to $2,250.
If you’re experienced with wrenching, you can save this cost entirely, but beware of hidden difficulties: accessing the lower turbo bolts on the FA20 is tight, and routing the intercooler piping often requires removing the front bumper. A DIY install also risks voiding parts warranties if you damage components. For most owners, paying a reputable shop is money well spent—just be sure to get a fixed-price quote upfront.
Critical Supporting Modifications
Reaching 300 hp reliably requires several other upgrades beyond the turbo kit itself. Skipping these can lead to detonation, overheating, or fuel starvation.
Fuel System Upgrades
The stock fuel pump and injectors on the Toyota 86 are sufficient for about 230–250 whp on a well-tuned naturally aspirated setup. Once you add boost, they quickly max out. You’ll need at least a 255-lph fuel pump ($100–$200) and larger injectors. Direct-injection only builds can get away with upgraded high-pressure fuel pump internals ($400–$600), but many tuners recommend adding port injection (a kit from Injector Dynamics or Motec) to supplement fuel delivery. That can add $800–$1,500.
Intercooler and Cooling
A front-mount intercooler (FMIC) is almost mandatory for sustained power. Entry-level bar-and-plate units cost $300–$500, but high-end Garrett or Treadstone cores can push $800–$1,000. You’ll also likely need an upgraded radiator (Koyorad or CSF) to keep coolant temperatures in check—especially if you track the car. That adds another $300–$600.
Exhaust System
The stock exhaust is very restrictive. A full catback and downpipe (or front pipe) upgrade is recommended to reduce backpressure and spool the turbo faster. Expect to spend $300–$800 for a quality unit from MagnaFlow, Invidia, or GReddy.
Clutch and Drivetrain
The stock clutch on the GT86 is rated for about 200 lb-ft of torque. At 300 hp, you’ll likely be making 250–280 lb-ft, which will quickly slip the stock clutch. A stage 2 or stage 3 clutch kit (e.g., Exedy, ACT) costs $400–$700. For peace of mind, also consider upgrading the transmission mount and differential bushings ($100–$200) to handle the torque.
Engine Management and Tuning
A proper tune is not optional—it’s what makes the turbo kit safe. The FA20 ECU is tricky to reflash because of its direct injection and Toyota/Subaru co-developed logic. Popular options include:
- ECUTEK flash + cable: $400–$700
- OpenFlash Tablet: $500–$600
- Motiv Reflash or Standalone (Haltech, Motec): $1,200–$2,500+
Dyno tuning sessions cost $400–$800 for a custom tune. A base tune from the kit manufacturer might be included, but a proper dyno tune will ensure safe air-fuel ratios and timing. Expect at least two tuning sessions—one initial and one after you’re satisfied with the setup.
Hidden Costs That Inflate the Budget
Even with careful planning, extra expenses arise. Here are the most common hidden costs:
- Oil and coolant lines – Many kits only include basic hoses; you may need AN fittings custom-made ($100–$300).
- Boost controller – A manual boost controller ($30–$50) works for basic builds, but an electronic one (e.g., MBC or ECUTek boost control) adds $200–$400.
- Wideband O2 sensor and gauge – Essential for tuning and monitoring air-fuel ratios ($150–$250).
- Spark plugs – Upgraded iridium or copper plugs (one step colder) cost $40–$80.
- Gaskets and seals – If the engine has high miles, you may need to reseal the timing cover or replace gaskets ($100–$300).
- Fabrication fees – If the shop needs to custom-mount the intercooler or modify the crash bar, add $200–$500.
Total Cost Estimate: From Budget to Turnkey
Below is a realistic cost breakdown for a 300-wheel-horsepower turbo build on a Toyota 86. Prices are in USD and assume professional installation and a mid-range turbo kit. Adjust based on your choices.
| Item | Low Budget | Mid-Range | Premium Build |
|---|---|---|---|
| Turbo Kit | $2,500 | $4,000 | $6,500 |
| Labor | $800 (DIY) | $1,200 | $1,800 |
| Fuel System Upgrades | $400 (pump + injectors) | $800 (full pump + injectors + rail) | $1,500 (port injection) |
| Intercooler & Radiator | $500 | $800 | $1,200 |
| Exhaust (catback + downpipe) | $350 | $500 | $800 |
| Clutch & Drivetrain | $400 | $600 | $900 |
| ECU Tune & Management | $400 (off-the-shelf) | $700 (ECUTek + dyno) | $1,500 (standalone + dyno) |
| Boosting Accessories (boost controller, gauges, plugs) | $200 | $400 | $600 |
| Hidden Costs / Contingency | $300 | $500 | $1,000 |
| Total | $5,950 – $6,000 | $9,000 – $10,000 | $15,000 – $16,000 |
Note: These figures assume you start with a healthy engine and do not need internal engine upgrades. At 300 wheel hp, the FA20’s stock internals are generally safe, but if you plan to push to 350+ whp or track the car hard, you should budget for forged pistons and rods ($2,000–$3,000 plus labor).
Performance Expectations: What 300 Horsepower Feels Like
With a well-tuned turbo kit and supporting mods, a 300 whp Toyota 86 will run 0–60 mph in roughly 4.5–5.0 seconds (down from 6.2 stock) and cover the quarter-mile in the mid-to-low 13-second range at about 105 mph. On a road course, the car will pull hard out of corners and maintain higher speeds on straights, but you will need upgraded brakes and better tires to fully exploit the power. A budget upgrade of $6,000 will get you a fun street car; a $10,000 build will be a reliable weekend track weapon; and a $15,000+ build will approach supercar performance in a lightweight package.
Reliability Considerations
Boost reliability on the FA20 depends heavily on oil control and heat management. The stock oil system can suffer from starvation during high-g cornering, so consider an oil cooler (added $300–$500) and an oil baffle or Accusump ($200–$600). Also, the direct-injection system is prone to carbon buildup on the intake valves; a turbo setup can make this worse if the PCV system isn’t properly vented. A catch can or air oil separator ($150–$300) is highly recommended. With proper maintenance and a conservative tune, a FA20 turbo build at 300 whp can easily last 60,000–100,000 miles.
Final Thoughts: Budget Wisely, Build Smart
Upgrading your Toyota 86 to 300 horsepower with a turbo kit is an exciting project, but it’s far more than just bolting on a turbo. The true cost lies in the supporting modifications, labor, and tuning required to make power safely. By planning for the full picture—including contingencies—you can avoid the frustration of a half-completed build or an unreliable car. Whether you opt for a budget CX Racing kit and DIY labor or a top-tier ETS system with professional tuning, the result will be a transformed driving experience that justifies every dollar spent.
External Resources for Further Research:
- FT86 Speed Factory – Comprehensive parts and builds for the 86/BRZ platform.
- GReddy Performance – Turbo kits and supporting modifications.
- HKS USA – High-end turbo systems and engine management.
- ECUtek – Tuning solutions for Subaru and Toyota ECUs.
- Mishimoto – Cooling systems and intercoolers for the 86.