Understanding the Greddy B16 Turbo Kit

The Greddy B16 Turbo Kit has been a staple in the Honda performance community for years. Designed exclusively for the B16A and B16B engines found in vehicles like the Civic Si, CRX Si, and Integra Type R (B16B), this kit offers a complete forced-induction solution. At roughly $2,000, it occupies a middle ground between budget “eBay” turbo setups and high-end custom fabrications. The kit includes a TD05H-16G turbocharger, a cast-iron exhaust manifold, an intercooler, all required piping, wastegate, blow-off valve, and gaskets. Greddy’s engineering focuses on delivering reliable power gains without compromising daily drivability.

What’s in the Box

When you open the Greddy kit, you’ll find:

  • Turbocharger: TD05H-16G – a proven unit that supports up to 400 hp with proper supporting mods.
  • Intercooler: Bar-and-plate design, 24×12×3 inches – efficient for street use.
  • Exhaust Manifold: Cast iron, equal-length runners – reduces cracking risk common with tubular manifolds.
  • Wastegate: Internal 38mm – pre-set at 7 psi but adjustable.
  • Blow-Off Valve: Type S – vented to atmosphere, recirculation kit optional.
  • Piping: Mandrel-bent aluminum with silicone couplers and clamps.
  • Hardware: All bolts, nuts, washers, and gaskets for installation.

The kit is designed as a “bolt-on” system, meaning it requires minimal fabrication. However, Greddy’s official website recommends professional installation for those without extensive turbo experience.

Owner Reviews and Real-World Feedback

To get a balanced view, we analyzed over 100 owner reviews from forums like Honda-Tech, D-series.org, and Reddit’s r/Honda. Recurring themes covered installation experience, power delivery, reliability, and customer support.

Installation Process

Most owners with moderate mechanical ability found the installation straightforward. The kit eliminates guesswork; all pipes are pre-cut and flanged. Average install time ranges from 6 to 10 hours for a first-timer. However, several users noted that the intercooler piping requires trimming the front bumper support or relocating the power steering reservoir in some chassis (e.g., 1992–1995 Civic). “It’s not truly 100% bolt-on for every chassis,” said one owner on Honda-Tech, “but it’s close enough for a DIYer.”

Performance Gains

The most cited benefit is the dramatic increase in power. Stock B16 engines produce around 160 hp at the wheels. With the Greddy kit at 7–8 psi and a basic tune, owners report 220–250 whp. With supporting mods (fuel system, intercooler upgrade, higher boost), figures climb to 300–330 whp. One detailed build thread documented 287 whp and 210 lb-ft torque on a stock B16A with the kit, a Hondata S300 ECU, and 440cc injectors. That represents a gain of roughly 125 hp over stock.

Reliability and Driveability

Several long-term owners (over 20,000 miles) reported that the engine remained reliable when kept below 10 psi with proper tuning. The cast-iron manifold resists cracking, and the TD05H-16G turbo spools quickly, providing good low-end torque compared to larger turbos. “My Greddy kit has been on my Civic for four years as a daily driver,” one Reddit user wrote. “Oil changes every 3,000 miles, no major issues.” However, some noted that the supplied intercooler piping clamps can loosen over time, requiring periodic checks.

Customer Support and Documentation

Greddy’s support generally receives positive marks. Owners appreciated the comprehensive instruction manual and the availability of replacement parts directly from Greddy. A few reported minor fitment issues with the wastegate actuator arm on early kits, but Greddy quickly shipped replacements. “Called them about a stripped bolt; they sent a hardware kit free of charge,” said a user on Team Integra.

Performance Data and Dyno Results

We compiled dyno sheets shared by owners to present typical performance at different boost levels. The numbers below represent wheel horsepower and torque on a Dynojet dynamometer.

Boost Pressure Average Horsepower Average Torque Notes
7 psi (base tune) 220–240 whp 190–210 lb-ft Stock fuel system, tune recommended
9 psi (with 440cc injectors and ECU) 260–280 whp 220–240 lb-ft Requires aftermarket fuel pressure regulator
12 psi (full supporting mods) 300–330 whp 250–270 lb-ft Intercooler upgrade, forged pistons recommended

It’s important to note that the B16’s small displacement (1.6L) means torque doesn’t match larger engines, but the power curve is linear and responsive. Owners describe it as feeling like a “scaled-up K20” – not overwhelming but very enjoyable on the street and track.

Cost vs. Value Breakdown

The $2,000 price point is competitive when compared to similar kits from Garrett (often $3,000+) or Rev9 ($1,200 but lower quality). However, the Greddy kit is not truly “plug and play” for every owner because of the required supporting modifications. Let’s break down the total investment often needed to run the kit safely.

Supporting Modifications and Their Costs

  • Fuel Injectors: 440cc – $200–$300
  • ECU Tune (e.g., Hondata, Neptune): $500–$800 plus software
  • Fuel Pump: Walbro 255 – $100
  • Clutch Upgrade: Stage 1 or 2 – $400–$600 (stock clutch may slip above 250 whp)
  • Boost Controller (optional): $150–$300
  • Oil and Coolant Lines: sometimes needed if kit doesn’t include – $50

Adding these, the real-world cost lands around $3,500 to $4,000. Still, many owners argue that the Greddy kit’s reliability and track record justify the premium over budget alternatives. As one owner put it: “You can spend $1,200 on a Chinese kit and $800 replacing parts, or just buy Greddy and drive worry-free.”

Comparison with Other Kits

We compared the Greddy kit against two popular alternatives:

  • Rev9 Kit ($1,200): Similar design but uses thinner piping, cheaper blow-off valve, and a turbo that often needs rebuilding. Reviews report more fitment issues and less consistent power. Reliability is questionable for daily driving.
  • Garrett GTX2867R Custom Kit ($3,000+): Higher quality components, better spool, and top-of-the-line turbo. However, fabrication work is needed for piping and intercooler mounting. Better for 400+ hp goals but overkill for a B16 on the street.

For most enthusiasts wanting a proven, balanced upgrade, the Greddy kit remains the sweet spot. A detailed Honda-Tech buyer’s guide frequently lists it as a top recommendation for the B16.

Additional Considerations Before Buying

Beyond the kit and supporting mods, there are practical factors to evaluate.

Insurance Premiums

Adding a turbo to your Honda will likely increase your insurance cost. Some companies offer “agreed value” policies for modified cars. Shop around; quotes vary significantly. One owner reported a $30/month increase, while another saw $80. It’s wise to inform your agent before installation to avoid coverage issues.

The Greddy kit does not have an EO (Executive Order) number for CARB approval, meaning it is not legal for use on vehicles that require smog testing in California and other states that follow CARB standards. Owners in these regions must either install the kit as a “race only” setup and face potential fines, or relocate to a county without testing. Always check local laws. For those outside CARB states, the kit is generally fine as long as the engine remains intact.

Engine Longevity

The B16 is a robust engine, but adding boost increases stress. For sustained high boost (above 10 psi), consider upgrading to forged pistons, rods, and a stronger head gasket. At stock internals, keeping boost at 7–8 psi with a conservative tune yields long life – many examples run over 100,000 miles after turbo installation. Oil cooling and an upgraded radiator are recommended for track use.

Turbo Timer and Gauges

To monitor vital signs, you’ll need at least a boost gauge and an oil pressure gauge. A wideband air/fuel ratio gauge is highly recommended for tuning. Some owners also install an oil temperature gauge. Total cost for gauges and pods: $200–$400.

Where to Buy and Installation Recommendations

The Greddy B16 Turbo Kit can be purchased from authorized dealers like Imports World or directly from Greddy. Some online retailers offer free shipping, but be wary of counterfeit kits – always buy from reputable sources. Installation is feasible for a skilled DIYer, but if you’re not confident with welding or wiring, a professional shop will cost $500–$1,000. Many shops have experience with this kit and can complete it in a day.

Common Pitfalls During Installation

  • Oil drain line routing: Must be angled properly to prevent restriction – use a -10AN hose.
  • Intercooler clearance: 1992–1995 Civics may need the bumper support trimmed or a slim radiator fan.
  • Wastegate spring: Pre-set at 7 psi; if you want higher boost you need an aftermarket boost controller.
  • Coolant lines to turbo: Some kits rely on engine coolant flow; ensure no kinks.

Reading the full install guide on Greddy’s tech support page before starting will save time.

Final Verdict: Is It Worth the $2,000?

Averaging more than 100 owner reviews and dyno data, the Greddy B16 Turbo Kit earns a strong recommendation for those seeking a reliable, proven power increase. The initial cost of $2,000 is just the entry point; factoring in supporting modifications brings the total to around $3,500–$4,000. That still undercuts many turnkey kits from premium brands while offering similar build quality.

The kit shines in its balance of power and drivability. It transforms a B16 from a rev-happy momentum engine into something with genuine low-end punch – enough to make daily commutes exciting without sacrificing reliability. Downsides include the lack of CARB approval and the need for additional tuning components, but these are expected for any forced induction on a Honda.

If you own a Civic, CRX, or Integra with a B16, and you want a turbo system that you can trust, the Greddy kit is money well spent. For hardcore track builds aimed at 400+ hp, you’ll outgrow it. But for 90% of enthusiasts, this kit delivers exactly what it promises: accessible, dependable, and fun performance. Owner feedback confirms that the $2,000 price tag is justified by the results on the dyno and the road.