The Subaru BRZ has earned a loyal following for its lightweight chassis, precise steering, and near-perfect balance. Yet for many enthusiasts, the stock launch leaves something on the table — especially when chasing consistent, rapid starts at the drag strip or autocross. Adding a two-step launch control system transforms the BRZ's standing-start performance, allowing drivers to hold the engine at an optimal RPM before releasing the clutch. This article provides a deep dive into the best two-step launch control options for the Subaru BRZ, covering top brands, real-world costs, and the performance gains you can expect.

What Is Two-Step Launch Control?

Two-step launch control is an electronic engine management feature that sets two separate rev limits: one for neutral or clutch-in (the “first step”) and another for normal driving (the “second step”). When the clutch is depressed and the vehicle is stationary, the engine is held at a preset RPM — typically between 3,000 and 5,500 rpm depending on tire grip and power level. Once the driver dumps the clutch, the ECU switches to the second, higher limit, allowing the engine to accelerate without the risk of overshoot or fuel cut hesitation.

How It Works

The system uses input from the clutch switch, speed sensor, and throttle position to seamlessly transition between rev limiters. On the Subaru BRZ, this is typically implemented via a programmable ECU or a piggyback tuning module. The result is a consistently strong launch — no more guessing how much to rev before slipping the clutch. Two-step launch control also minimizes torque spikes that cause wheel spin, giving the rear tires a better chance to hook up.

Why the Subaru BRZ Benefits from Two-Step Launch Control

The BRZ's naturally aspirated 2.0-liter FA20 engine produces modest low-end torque, making it susceptible to bogging or spinning on aggressive launches. Two-step control eliminates the bog by holding the engine right at the torque peak, while also preventing excessive wheel spin by reducing timing or cutting fuel momentarily if the launch is too violent. For track days, drag racing, or even spirited street driving, the system delivers predictable, repeatable starts. Additionally, the BRZ’s six-speed manual transmission and lightweight flywheel make it an ideal candidate for launch control — the system protects the drivetrain by smoothing out the initial shock.

Top Brands for Two-Step Launch Control on the Subaru BRZ

Several aftermarket brands offer two-step launch control compatibility for the BRZ. The best choice depends on your tuning platform, budget, and performance goals. Below we explore five leading options, each with their own strengths.

1. ECUtek

ECUtek is the most widely used tuning solution for the Subaru BRZ. Their PROECU software includes a robust RaceROM feature set that encompasses launch control, flat‑foot shifting, and auto‑blip. The two-step launch control is fully customizable via the tuning suite: you can set launch RPM, boost cut (for forced induction cars), and timing retard aggressiveness. ECUtek maps are typically installed by certified tuners, and the system supports both OBD‑II flash and bench tuning. Reliability is excellent, and the integration with the stock ECU means no additional hardware is needed beyond a compatible cable and license.

Pros: Native integration, wide tuner support, includes other performance features.
Cons: Requires a professional tune; license cost adds to the total.

Learn more at ECUtek's official site.

2. AEM Electronics

AEM offers a series of engine management systems, but the most popular for the BRZ is the AEM Series 2 Plug & Play (PnP) ECU. This unit replaces the factory ECU entirely and comes pre‑loaded with base maps that include a two-step launch control function. AEM’s system is known for its user‑friendly tuning software (AEMTuner) and robust datalogging capabilities. The launch control can be adjusted in real time via a switched input or a configuration file. It’s an excellent option for BRZ owners who want full control over every aspect of engine tuning, from launch parameters to ignition timing.

Pros: Full standalone capability; datalogging; plug‑and‑play installation.
Cons: Higher cost than flash tuning; requires some tuning knowledge.

Explore AEM’s products at AEM Electronics.

3. Haltech

Haltech is a premium name in engine management, and their Elite 1500 and Nexus R5 ECUs provide advanced two-step launch control for the BRZ. Haltech’s launch control can be configured with multiple stages, including a “soft” limiter to protect the transmission and a “hard” limiter for maximum launch aggression. The system also supports launch RPM ramping, where revs gradually increase as the clutch engages. Haltech ECUs come with pre‑wired harnesses for the BRZ, making installation straightforward for a professional shop.

Pros: High‑end features; excellent support for forced induction; race‑proven.
Cons: Expensive; overkill for mild street builds.

Visit Haltech's website for details.

4. Grimmspeed

Unlike the full standalone ECUs above, Grimmspeed’s two-step launch control solution is a dedicated module that piggybacks onto the stock ECU. The Grimmspeed Launch Control Module is designed specifically for the Subaru BRZ (and other Subaru models) and provides a simple, cost‑effective upgrade. It requires no tuning; instead, you set the launch RPM via a potentiometer on the module. The unit intercepts the crank and cam sensor signals to adjust the rev limiter. Installation takes about an hour and requires only basic wiring skills.

Pros: Affordable; no tuning needed; easy DIY installation.
Cons: Less flexible than ECU tuning; limited to launch control only (no flat‑foot shifting or other features).

Check out the module at Grimmspeed's product page.

5. MoTeC

MoTeC stands at the top of the aftermarket ECU hierarchy. Their M150 or M142 ECUs, paired with the appropriate BRZ PnP harness, unlock an incredible level of customization for launch control — including slip‑based control using wheel speed sensors. MoTeC also integrates high‑speed logging, which is indispensable for serious racers analyzing launch performance. The learning curve is steep, but for maximum track‑oriented performance, MoTeC is the gold standard.

Pros: Professional‑grade features; datalogging; slip control.
Cons: Very expensive; requires expert tuning support.

Cost of Two-Step Launch Control Systems

Pricing for two-step launch control on the Subaru BRZ varies widely depending on whether you choose a piggyback module, a flash tune, or a full standalone ECU. Below is a realistic breakdown including typical tuning labor:

  • ECUtek RaceROM flash tune: $600–$900 (license + tune + labor)
  • AEM Series 2 PnP ECU: $1,200–$1,600 (unit + base map + tuning)
  • Haltech Elite 1500 with harness: $1,800–$2,500 (ECU + harness + tuning)
  • Grimmspeed Launch Control Module: $400–$550 (module, DIY install)
  • MoTeC M150 with PnP kit: $3,500+ (ECU, harness, professional calibration)

These figures assume you already have a laptop and any required tuning software. If you plan to install a piggyback module yourself, you can save on labor but must be comfortable with wiring. For ECU-based systems, professional tuning is strongly recommended to ensure safe fuel and ignition maps. Additionally, forced‑induction builds may require a dyno tune, pushing the total cost even higher.

Performance Outcomes: What You Can Expect

Equipping your Subaru BRZ with a well‑calibrated two-step launch control system yields measurable improvements in several metrics:

  • 0–60 mph timing: With proper launch RPM (typically 4,000–5,000 rpm on street tires), BRZs can shave 0.3–0.6 seconds off their 0–60 time. Stock cars often struggle with wheel spin or bog; launch control ensures the engine stays in the sweet spot.
  • Consistency: Human error disappears. Racers report that their 60‑foot times become repeatable within hundredths of a second, which is critical for bracket racing or autocross classes.
  • Drivetrain protection: By limiting shock loads, two-step control reduces the risk of snapping axles or damaging the transmission, especially on cars with upgraded tires or more power.
  • Torque management: Advanced systems (MoTeC, Haltech) can pull timing on a per‑cylinder basis during launch, leading to smoother power delivery and less wheel spin.

Independent testing on naturally aspirated BRZs has shown consistent 0–60 times of 5.5–5.8 seconds with launch control, compared to 6.0–6.5 seconds without. For turbocharged or supercharged cars, the improvement is even more dramatic — some builds have recorded sub‑4.0‑second 0–60 times with proper launch control and sticky tires.

Installation and Tuning Considerations

Installing two-step launch control on a Subaru BRZ is not a simple bolt‑on; it involves either reflashing the stock ECU or adding an external controller. Here are key points to evaluate before purchasing:

  • Warranty: Modifying the ECU or wiring may void factory or extended warranties. Stick with piggyback modules if you want to return to stock easily.
  • Clutch: Launch control puts additional stress on the clutch assembly. If you plan to use it regularly, consider upgrading to a stronger clutch disc and pressure plate.
  • Clutch‑in safety: Some systems allow you to set launch control only when the clutch is fully depressed and the car is stationary. Make sure your system has this safeguard to prevent accidental activation at speed.
  • Flat‑foot shifting: Many ECUs also offer flat‑foot shifting (allows full‑throttle upshifts without lifting off the gas). This feature complements launch control for overall performance.
  • Professional vs. DIY: Piggyback modules like Grimmspeed are DIY‑friendly with clear instructions. Standalone ECUs require professional wiring and tuning to avoid engine damage.

For the best results, work with a tuner who has experience specifically with the Subaru BRZ FA20 engine. The factory ECU has many safety strategies that can conflict with aftermarket launch control if not properly disabled.

Conclusion

Two-step launch control is one of the most effective upgrades you can make to a Subaru BRZ for improving off‑the‑line performance. Whether you opt for a simple, affordable module like the Grimmspeed or invest in a full standalone system from MoTeC, the gains in consistency and acceleration are real. Choose a system that fits your budget, your technical comfort level, and your performance aspirations. And always remember: a good launch starts with a well‑prepared car — proper tire pressure, a warm engine, and a practice session or two. Armed with the right two-step launch control setup, your BRZ will be a force to reckon with at every stoplight and starting line.