Cobb NexGen Stage 2 Power Package – Black – 2015-2018 Subaru STI

Cobb NexGen Stage 2 Power Package — Black — 2015-2018 Subaru STI

The Cobb NexGen Stage 2 Power Package for the 2015-2018 Subaru STI moves the EJ257 to a complete front-mount intercooled Stage 2 system. Includes the Accessport V3, NexGen SF Intake, NexGen FMIC in black, NexGen FMIC pipe kit, and NexGen boost control solenoid — the complete integrated Stage 2 package for the GR/VA STI EJ257.

DETAILS

• Includes: Accessport V3 + NexGen SF Intake + NexGen FMIC (Black) + FMIC Pipe Kit + NexGen Boost Solenoid
• Platform: 2015-2018 Subaru WRX STI EJ257 MT
• NexGen FMIC: front mount intercooler in black — replaces TMIC for dramatically lower charge temps
• NexGen SF Intake: optimized airflow for Stage 2 boost targets on EJ257
• NexGen Boost Solenoid: enables precise Stage 2 boost control
• Accessport Stage 2 OTS maps: calibrated for NexGen hardware — 91 octane, 93 octane, E85
• NOTE: Ships via UPS/FedEx — signature required at delivery

What Stage 2 Adds Over Stage 1

The NexGen Stage 2 system is built around three hardware changes that work together as an engineered package: the front mount intercooler, the NexGen SF intake, and the NexGen boost control solenoid. The FMIC moves charge air cooling from the top of the engine (where the factory TMIC sits, directly in the heat-soak zone) to the front bumper opening, where ambient airflow keeps charge temperatures dramatically lower. The NexGen SF intake routes air from the airbox through a wider, smoother path to the turbocharger inlet, supplying the turbocharger with the improved airflow it needs to reach Stage 2 boost targets. The NexGen boost control solenoid replaces the factory unit with a higher-response valve that allows the Accessport ECU map to execute boost control commands more precisely and reach boost levels the factory solenoid cannot maintain reliably. These three components are developed together — the FMIC’s cooling capacity, the intake’s airflow capability, and the solenoid’s control precision are all matched to each other and to the Accessport Stage 2 OTS map that orchestrates them.

System Components and NexGen Technology

The Accessport V3’s Stage 2 OTS maps are calibrated specifically for the NexGen hardware configuration — they are not Stage 1 maps with higher boost targets, but independently developed calibrations that account for the FMIC’s lower charge air temperatures, the intake’s improved airflow, and the more precise boost control the NexGen solenoid enables. On quality 93-octane fuel, the Stage 2 OTS maps target meaningfully higher boost levels than Stage 1, with ignition timing optimized for the cooler, denser charge air the FMIC delivers. The result is improved power across the entire mid-range and top end versus Stage 1, with better consistency under sustained hard driving because the FMIC keeps charge temperatures stable even on back-to-back pulls or track sessions.

What’s in the Box

• Cobb Accessport V3
• Cobb NexGen SF Intake System
• Cobb NexGen FMIC intercooler core — Black finish
• Cobb NexGen FMIC pipe kit
• Cobb NexGen boost control solenoid
• OBD-II cable
• USB cable
• 2 faceplates
• Universal mount
• OTS Stage 2 maps

Why Choose Cobb Tuning

Cobb Tuning has been developing performance software and hardware for turbocharged enthusiast vehicles since 1999. Founded in Austin, Texas, Cobb built its reputation on the Accessport and expanded into a full catalog of hardware engineered to complement it. Every OTS map is developed in-house on real vehicles, and every hardware product is validated as part of a complete system — not sourced and sold in isolation. That integrated approach is why Cobb produces consistent, reliable results across the builds we see every day.

The RallySport Take

NexGen Stage 2 for the 2015-2018 STI unlocks the EJ257’s full performance potential within the stock turbocharger configuration. The factory TMIC is the performance ceiling for Stage 1 on this platform — moving to the NexGen FMIC removes that ceiling and enables the Stage 2 OTS maps to target boost and timing levels that TMIC-limited configurations cannot safely reach. The black intercooler is visible through the front bumper opening, and it keeps charge air temperatures dramatically lower than the TMIC can achieve — not just on a single pull, but consistently across track sessions and back-to-back hard driving.

Fitment

Year	Make	Model	Notes
2015-2018	Subaru	WRX STI	EJ257 MT