WRX & STI Haltech Elite 2500
We are proud to offer a Motorsports friendly plug and play harness/ECU for ALL 2004 to 2021 STi, WRX, LGT and FXT using the Haltech Elite 2500 ecu on the EJ25 or EJ20 engine. This direct plug n play harness connects your original OEM engine harness to the Haltech Elite 2500 for a truly “plug in” installation that only takes minutes. This harness and the Elite 2500 ecu are both designed for off road motorsports use such as time attack, rally and circuit racing using the oem manual transmission or any aftermarket sequential transmission. We have developed this package specifically with Full Flex Fuel support for ALL STI and WRX’s using the EJ25 including the 2008-2015 sti/wrx with CANbus as well as the 2015 to 2021 STI with updated CANbus and key or push button start. All 2008+ STI’s who wish to use flex fuel and fuel pressure inputs through the TGV wiring should be sure to add our IO expansion module to your order. Any order adding the optional IO expansion module comes with the IO module and fully prewired to ensure super easy/smooth install. Adding the IO expansion is key for 08+ STI’s if you intend to use all oem inputs + TGV x2 and rear o2 sensor x1 for custome sensor inputs. (Any questions on this don’t hesitate to contact us we are here to ensure you get exactly what you need for your STI/WRX.)
2021 STI Running our Elite 2500 ECU package
One of our recent packages went out for a 2021 STI we supplied a full IAG Long Block, ETS V-band Turbo kit, ID2600xds injectors and our Haltech ECU package. This car makes over 800whp on E85 at 40psi of boost and drives smoother than a stock STI! We guarantee the best service and pricing on all the best brands and parts for your Subaru. If you don’t want to mess around and simply get it done right we are here for you and have everything you need.
Why Choose the Brewed Motorsports Haltech Elite 2500 Package?
- FREE base map for easy engine start up when you order PnP harness, Elite 2500 ECU and any Injector dynamics injectors.
- Already have injectors, no worries you will still get $100 credit towards any E-tune service with purchase or our PnP harness and Elite 2500 ecu.
- Our PnP harnesses use uniquely colored wire and comes with complete pin out diagram unlike the competition that uses a single wire color to keep production cost down.
- No need for custom sensor harnesses our kit! Our Plug n Play Haltech elite 2500 package works with any Cobb or other aftermarket sensor kit that uses the TGV’s or rear o2 sensor inputs.
- Have a special/unique setup? Let us know and we can configure the PnP harness/ECU package specifically to support your exact configuration for any digital or analog sensor input or output.
- Wholesale tuning/setup support and specials for Tuning shops re-selling our PnP Haltech Elite 2500 STI packages to their customers.
STI Haltech Elite 2500 ECU Motorsports Functions:
- Custom 3D & 4D Fuel and Ignition tables specific for EJ25 Applications
- Custom Fuel, Boost, AVCS and Ignition trim tables perfect for fine tuning any EJ series engine for maximum reliability and power delivery.
- Launch control and Boost select Via SI drive switch for on the fly calibration changes
- Anti-lag (drag style antilag as well as rally style antilag functions)
- No lift shift
- TGV and rear O2 sensor inputs for custom sensor ALL WRX and STI versions. (08+ STI must use with our IO expansion module option for TGV and rear O2 sensor inputs)
- Flex fuel sensor support available for ALL WRX and STI application via TGV inputs (Digital flex fuel signal or Cobb style analog 0-5 volt both supported)
- Wideband o2 sensor (analog 0-5 volt)
- Fuel pressure sensor (analog 0-5 volt)
- Engine protection strategies (see recommended sensors listed above)
- Live map select aka map switching functions
- Closed loop boost control, fueling, knock feedback
- Open software (FREE to the public so you can do all the tuning and data logging you would like no restrictions)
- Optional E-tune support + Track support for the serious racers/drivers
- Fully bench tested to ensure 100% accuracy of all wiring. (These harnesses are build specifically to our spec in order to fully support all motorsports functions such as flex fuel via the optional IO expansion module.)
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 Subaru ECU package, perfect 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:
- 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
If you have any questions or requests about our Haltech ECU packages or what the best ECU option is for your Subaru build don’t hesitate to comment below, send us an email or call us any time. Our team of specialists is always here to support you and your build. We ensure you get things done right the first time and don’t waste time or money on any unnecessary parts. Reliable, repeatable performance is our specialty as we want you to enjoy your car trouble free for many years to come.
Check out our guide for The Best modifactions for a STI we walk you through all the ins and outs of the EJ25/STI platform to ensure you get exactly what you are looking for out of your build.
**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.**