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AWDtuning 15+ STI Stage 3 400whp 93 oct Package

Price

$12,700.82

Included in This Package

  • Blouch Dominator 1.5XT-R Ball Bearing Turbo

  • Cobb 1050x Injectors

  • IAG PTFE Fuel System Kit w/Rails, Lines, FPR

  • Perrin Turbo Inlet

  • COBB 4BAR MAP Sensor

  • Fuelab 494 Series High Output In-Tank Fuel Pump

  • ETS Front Mount Intercooler System

  • Forge Atmospheric Blow Off Valve

  • ETS Air Intake Kit

  • IAG Air/Oil Separator

  • MAPerformance GESi Gen 2 Downpipe

  • COBB 3 Port Boost Control Solenoid

  • COBB Accessport

  • Professional Installation

  • Custom Dyno Tuning by a COBB Certified Protuner

About the Package

This is a complete package for a 100% stock 2015-2021 STi. It has everything you need to make 400hp at the wheels. We only recommend quality parts for our customers, and everything in this package lives up to our standards. This setup has been tested and produces very consistent results. Pair this with our drivetrain package to make your STi a street machine.

AWDTuning is a full-service performance and motorsports shop based in Flower Mound, Texas, serving DFW and clients nationwide through remote tuning. We specialize in calibration, diagnostics, dyno testing, performance maintenance, and custom builds across Subaru, BRZ/GR86, Nissan VR30, Mustang Coyote, GT-R, and more.

Unlike basic repair shops or “flash tune” operations, our approach is data-driven and reliability-focused. Every vehicle is evaluated as a system — fuel delivery, airflow, ignition, mechanical condition, and usage goals all factor into how we build your calibration or repair strategy. Whether you need remote e-tuning, dyno verification, standalone ECU calibration, or in-depth diagnostics for a problem car, our process is structured, repeatable, and transparent.

We work with COBB, EcuTek, HP Tuners, and professional standalone systems such as Haltech, Link, Emtron, and MoTeC. In-house Mustang AWD dyno testing allows us to validate changes under controlled load. Our diagnostic workflow is built around solving issues before tuning — misfires, knock, boost leaks, fuel pressure problems, drivability concerns, and sensor plausibility checks.

From daily-driven street cars to high-horsepower builds and motorsport applications, AWDTuning provides complete support from initial consultation through final calibration. If you’re looking for a shop that understands both performance and reliability, you’re in the right place.

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