
Engine management
No wiring needed
Haltech Platinum PRO Plug-in ECU for Subaru GDB WRX MY01-05 (HT-055174)
SKU: HT-055174
Engine management
No wiring needed
ECUs always ship FREE with Tuned By Shawn!
Manufacturer Limited Warranty

Haltech Platinum PRO Plug-in ECU for Subaru GDB WRX MY01-05 (HT-055174)
Product details
Description
Full standalone engine management with zero harness surgery: Haltech Platinum PRO Plug-in ECU for Subaru GDB WRX MY01-05 plugs directly into the factory ECU header and takes over from there. Subaru WRX (GDB MY01-05), STI (MY01-05 JDM & Aust Only) EJ20 Non DBW. Manual transmission only. The stock loom and sensors stay, the factory ceiling goes.
What You'll Feel
Factory drivability with the ceiling removed: the stock harness and sensors stay, but fuel, ignition, boost, and auxiliary control become fully programmable, tuned to your injectors, turbo, and fuel. The EJ platform responds immediately to proper standalone control: accurate AVCS handling, per-cylinder fueling on an unequal-length header car, and boost control that holds a target instead of chasing one.
Features
- Plugs directly into the factory ECU header, no harness modification
- Retains factory sensors and wiring
- Fully programmable fuel, ignition, and boost control
- Data logging and CAN expansion support
The Details
- SKU: HT-055174
- Notes: Directly accepts an input from a flex fuel sensor.
Kit Includes
- Platinum PRO Direct Plug-in ECU, Plug and pins for auxiliary I/O harness. Haltech CAN adaptor cable DTM-4 female receptacle/socket to 8 pin black Tyco 3"/75mm (used to adapt a Platinum series ECU to a DTM-4 Elite CAN system), USB programming cable and USB Software Key.
Applications
Subaru WRX (GDB MY01-05), STI (MY01-05 JDM & Aust Only) EJ20 Non DBW. Manual transmission only. Built for Subaru EJ applications. Unsure about fitment for your build? Send us your engine and chassis details before ordering and we will confirm compatibility.
As a Platinum Haltech Dealer, Tuned By Shawn supports everything we sell with in-house wiring services and remote tuning over live Zoom. Questions on fitment or setup before you order, send them through and we will confirm the right parts for your build.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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