The Stage 2 Air Power Package pairs the ECUtek Phone Flash system with Teter Auto’s upgraded air intake, high Flow Catted J Pipe and a electronic boost controller, designed specifically for the 2015–2021 Subaru WRX.

Teter Auto Air Intake System

This intake setup is an ideal starting point for WRX owners looking to improve airflow and engine response. The airbox is made from durable black powder-coated aluminum and is designed to draw in air from the factory scoop. A large, pre-oiled filter handles filtration duties, with airflow guided through a velocity stack-style MAF housing. Reinforced silicone couplers and quality clamps ensure a secure, leak-free connection.

Engineered for Flow and Accuracy

To maintain smooth, consistent airflow and precise MAF readings, the system uses a CFD-designed velocity stack, a high-flow conical filter, and an integrated air straightener grid. These elements reduce turbulence and ensure clean sensor readings. The MAF housing is made from lightweight, heat-resistant composite to help manage under-hood temperatures.

High Flow Catted J Pipe

The Teter Auto High Flow Catted J Pipe is engineered to optimize your vehicle’s exhaust flow while maintaining emissions compliance. Crafted from premium stainless steel, this high-performance J pipe features a high-flow catalytic converter that reduces backpressure and enhances exhaust scavenging. Designed for improved throttle response and increased horsepower, it’s an ideal upgrade for enthusiasts seeking both power gains and street-legal operation. Its precise fitment ensures easy installation, while the durable construction guarantees long-lasting performance and corrosion resistance. Elevate your exhaust system with the Teter Auto High Flow Catted J Pipe—where efficiency meets performance.

Boost Controller

The Teter Auto Electronic Boost Controller is a high-precision device engineered to expertly regulate and optimize turbocharger boost pressure for forced induction engines. Unlike conventional mechanical controllers, this cutting-edge unit leverages advanced electronic signals to precisely manage the wastegate actuator, delivering faster, more consistent, and fully customizable boost control. Designed for both drivers and tuners, the Teter Auto controller allows real-time fine-tuning of boost levels, enhancing engine performance, throttle response, and fuel efficiency while safeguarding against dangerous over boost scenarios. Featuring programmable settings, comprehensive data logging, and smooth integration with modern engine management systems, the Teter Auto Electronic Boost Controller is the ideal choice for enthusiasts seeking to unlock maximum power and maintain reliable, safe operation even under the most demanding conditions.

Tuning Capability

This package comes with a custom E tune from Cstuned, delivered through ECUtek Phone Flash. This is not an off-the-shelf map, but a fully personalized calibration created specifically for your vehicle, modifications, and fuel type. It ensures optimal performance, drivability, and reliability based on your unique setup.

For enthusiasts seeking even more refinement or peak output, an optional dyno tuning upgrade is also available.

WHY?

The Teter Auto Stage 2 Power Package is a straightforward bolt-on upgrade combined with expert ECUtek tuning to unlock the full potential of your 2015 WRX. Unlike generic off-the-shelf maps, this package provides a custom tune tailored specifically for your vehicle, ensuring both performance and reliability. Plus, there’s no need to connect any device to a computer — you can data log, adjust, and flash your tune directly through your smartphone, making tuning easier and safer than ever. Along with improved airflow from the Intake & Airbox setup, this package delivers serious power gains and a confident driving experience.