Grimspeed Stage 2 Power Package (08-14 Subaru STI)

SKU: GRM191005

$ 1,189

GrimmSpeed Stage 2 Power Package

The GrimmSpeed Stage 2 Power Package is a well-rounded kit, offering increased power and torque output thanks to reduced restriction before and after the turbo, as well as a more aggressive street presence thanks to the intake and exhaust tones. The upgraded GrimmSpeed 3-Port Boost Control Solenoid offers more accurate and more responsive boost control and is a must when having your vehicle professionally tuned. The GrimmSpeed Intake adds an additional performance increase by reducing pre-turbo restriction, which allows your turbo to build boost more quickly and more efficiently. The GrimmSpeed Downpipe replaces the extremely restrictive factory downpipe and catalytic converter with high quality 3” diameter stainless tubing and a high-flow catalytic converter

The divorced wastegate design of the Downpipe offers superior boost control and is the perfect complement to the Electronic Boost Control Solenoid. Over stock, the Downpipe replaces two restrictive catalytic converters as well as increases the tubing diameter. The result is a decrease in restriction after the turbo, an increase in turbine efficiency, and will further decrease time to spool as well as increase boost pressure.


  • Hybrid Cold Air/Short Ram Design
  • Custom reusable high flow air filter
  • Stainless Steel Construction - The downpipe is constructed of high-grade 304L SS for corrosion resistance and durability
  • 2-3hr Installation


  • Decrease Spool Time - Lower intake restriction and better boost control
  • Plug and Play into OEM Harness - No splicing wires like other BCS solutions
  • Integrated velocity stack entrance smooths incoming air
  • Corrosion resistance and durability


  • 2008 - 2014 Subaru STI

What's In The Box?

  • 1 - GrimmSpeed 3-Port Electronic Boost Control Solenoid
  • 1 - GrimmSpeed Cold Air Intake System
  • 1 - GrimmSpeed Catted Downpipe
  • 1 - GrimmSpeed Turbo Heat Shield
  • GrimmSpeed License Plate Frames

Installation Instructions


  • GrimmSpeed Lifetime Warranty

Payment & Security

Amazon American Express Apple Pay Diners Club Discover Meta Pay Google Pay Mastercard PayPal Shop Pay Venmo Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Recently viewed