GrimmSpeed Hood Scoop TMIC Splitter – 2002–2003 Subaru WRX STI (GD Bug-Eye)

Improve the intercooler efficiency of your 2002–2003 Subaru WRX STI's top-mount intercooler with the GrimmSpeed Hood Scoop TMIC Splitter. The GD bug-eye STI uses a hood scoop to feed ambient air to the top-mount intercooler — but the factory scoop-to-TMIC airflow path is inefficient, allowing a significant portion of the incoming air to bypass the intercooler core rather than flowing directly through it. GrimmSpeed's TMIC splitter installs inside the hood scoop and directs incoming airflow more precisely and efficiently into the TMIC core, reducing charge air temperatures, minimizing heat soak, and improving intercooler effectiveness. A meaningful upgrade for any GD STI build running the factory or upgraded TMIC.

Key Features

• Improved Scoop-to-TMIC Airflow: Directs hood scoop airflow more precisely into the TMIC core — reduces airflow bypass around the intercooler for improved cooling efficiency and reduced charge air temperatures
• Reduced Heat Soak: More efficient airflow through the TMIC core means lower and more consistent charge air temperatures — reduced heat soak for more consistent power output under sustained boost
• GD Bug-Eye STI Specific: Engineered specifically for the 2002–2003 Subaru WRX STI (GD, bug-eye) hood scoop and TMIC configuration — a separate part from the GD WRX splitter (093073) due to differing scoop and TMIC geometry
• Factory & Upgraded TMIC Compatible: Works with the factory GD STI TMIC and compatible aftermarket top-mount intercooler upgrades that retain the scoop-fed configuration
• GrimmSpeed Quality: Manufactured by GrimmSpeed — a trusted name in Subaru performance parts with a proven track record on the WRX and STI platforms

Specifications

• Type: Hood Scoop TMIC Splitter / Intercooler Ducting
• Intercooler Type: Top-Mount (TMIC) — Scoop Fed
• Engine: Subaru EJ207
• Fitment: 2002–2003 Subaru WRX STI (GD, Bug-Eye)
• Part Number: 093074

Note: STI-specific part — not interchangeable with the GD WRX splitter (093073) due to different hood scoop and TMIC geometry. Verify fitment for your specific GD STI model year before ordering. For STI builds considering a front-mount intercooler (FMIC) upgrade, a TMIC splitter is not applicable. Professional installation recommended.