Plug n Play Harness, Elite 2500 to Subaru 04-2021 USDM STi & WRX
$575.00
The plug n play harness for the 2004-2021 USDM sti to Haltech Elite 2500 ECU is the perfect solution to anyone building a track monster that needs the motorsports functions of the Haltech Elite ecu. This harness connects the OEM engine harness to the Haltech Elite 2500 ECU allowing for quick and easy install for any manual or sequential transmissions equipped STI or WRX using an EJ25. The Haltech ECU’s have been developed for off road motorsports use such as time attack, rally and circuit racing. You can find the Haltech 2500 ecu on a number of our race cars from drag racing to rally cross and drift cars. **This is a Motorsports only item never to be used on public roads within the USA.**
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We are proud to offer a Motorsports friendly plug and play harness for ALL USDM 2004 to 2021 STi and WRX to the Haltech Elite 2500 ecu using the EJ25 engine. This is a direct plug n play harness connecting your original engine wiring harness to the Haltech Elite 2500 ECU. This harness and the Haltech ECU are both designed for off road motorsports use such as time attack, rally and circuit racing. Manual or sequential transmissions only. We have designed this package specifically with Full Flex Fuel support for ALL STI and WRX’s using the EJ25 including the 2008-2015 cars with CANbus as well as the 2015 to 2021 STI with updated CANbus and push button start.
Our STI to Haltech Elite ECU packages deliver full motorsports functionality including:
- Launch control
- Anti lag
- No lift shift
- Flex fuel sensor support (with IO expansion module)
- Engine protection strategies
- Live map select aka map switching functions
- Closed loop boost control, fueling, knock feedback
- Open software (FREE to the public tuning and data logging software)
- Optional E-tune support + Track support for the serious racers/drivers
Special offer: For all Haltech plug & play ECU package customer (ECU + harness) we offer turn key base maps for all Injector Dynamic injectors free of charge with any ID injector order.
Plug & Play Harness, 2004-2021 STI & WRX to Haltech Elite 2500
This is the perfect wiring solution for any track prepped race car USDM 2004-2021 sti & wrx using an EJ25 that wants to take full advantage of the unlimited tunability of the Elite 2500 ECU package. This is hands down the most popular Suabru ECU package for anyone planning to run Flex Fuel with full support for the Cobb Flex fuel kits as well as the VE flex fuel kit. (We support analog flex fuel as well as digital flex fuel inputs with our Elite 2500 sti ECU packages.)
If you don’t already have the following electronics/parts in your car these are the most popular and performance orientated accessories/sensors for the Sti, WRX to Haltech Elite 2500 ecu :
- The AEM X series AFR gauge/sensor or the Haltech wideband o2 controller and sensor for closed loop fueling functions.
- Optional flex fuel, fuel pressure and oil pressure inputs are all standard inputs on the Elite 2500 ecu and highly recommended. These sensors support engine protection features key to any reliable race car.
- VE wideband knock kit (single sensor kit for EJ25 engines) This is a flat response Bosch motorsport knock sensor complete with shielded coax wire harness. These are the most effective knock kits available and offer better knock feedback than even the OEM Subaru knock sensor.
- ID1050x STI and WRX Injector dynamics 1050cc Injectors, 350-450whp
- ID1300x injectors STI perfect for power levels between 450-650whp
- ID1700x injectors STI provide good idle with ability to support 550-850whp
- ID2600xds injectors STI Over 2600cc of flow these are the best injectors for any high power alcohol fueled EJ engine 750-1300whp
**This is a Motorsports only item, never to be used on public roads within the USA. Please respect our environment and consider running renewable fuels like ethanol in your race car.**
Brand
Haltech
Velocity Element
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What others are saying
| Make | Model | Year | Engine |
|---|---|---|---|
| Make | Model | Year | Engine |
| Subaru | Impreza WRX | 2004 - 2005 | 2.0L 4-cyl Turbo |
| Subaru | Impreza WRX | 2006 - 2014 | 2.5L 4-cyl Turbo |
| Subaru | Impreza WRX STi | 2004 - 2020 | 2.5L 4-cyl Turbo |
| Subaru | Impreza WRX STi | 2021 - 2022 | EJ25 |
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Brewed Staff Eric_Brewed –
This is a plug n play harness for ALL USDM STI and WRX using the EJ engine for use with the Haltech Elite 2500 ecu. If you want a plug and play option for the USDM sti this is it and if you need custom base maps or Etuning services we have years of experience working with the Elite 2500 on a huge range of Subaru applications including the 2002-2021 usdm sti’s and wrx’s.
For those with 2015+ sti’s simply add the IO 12 expansion module to your package and we can fully support all your favorite ECU functions including MAP select/map switching, Flex fuel and engine protection strategies.
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Ben DeVries –
Looking for support for a custom 207/20X DAVCS setup running USDM Kelfords and e85 on the stock USDM STi ECU. Would like to speak with someone regarding the pnp harness and overall setup.
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Eric_Brewed –
Email or call anytime with your questions we are here to support.
The Haltech Elite 2500 packages are year/model specific as Subaru had a lot of ECU/wiring variations so please be sure to let us know the exact year/model and market when ordering. (our tuner will also confirm these details for each order to ensure proper fitment.)
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