ECU Comparison & FAQ

[8Complex]

This ECU comparison outlines the general features of each ECU to aide in selection purposes. Unfortunately specific information on certain (ok, most) ECUs is hard to come by, so there are holes in the information contained herein. If you have any additions to this information or find any errors please feel free to PM me via the button at the bottom of this post.

All of the ECUs outlined here are assumed to work with Subaru 4 cylinder models. Whether or not the units are Plug and Play, Kits, or wire-in only versions are outlined within the information regarding each individual ECU.

Jump to comparison :
AEM
Electromotive TEC-II
Electromotive TEC3
Haltech E6K
Link Plus/Link 2
MoTeC M4
Pectel T6 Motorsport
SDS EM-4 F
TurboXS UTEC
Wolf 3d v3.0
XEDE

Quick Glossary :
- Plug and Play versus Kits : Plug and Play units are strictly that, plug them in and go. Kit versions are units put together to work with the car, however additional wiring or installation of components will be necessary to install.
- Stand-alone versus Piggyback : Stand-alone units are meant to replace the stock ECU fully. Piggyback units utilize the stock ECU for some functions rather then performing them itself.
- Load reference types : MAP - Manifold Air Pressure, MAF - Mainifold Air Flow, TPS - Throttle Position Sensor.
- Output types : PWM outputs can output different voltages, whereas Digital outputs are strictly on/off outputs (usually to ground).

Some (most?) units will control both cooling fans and A/C circuitry, but will most likely use up extra outputs.

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As I stated above, if any information is incorrect or needs to be added, please PM me via. the button at the bottom of this post.

Credits : Nick Biancalana (8Complex), Jorge Carrillo (RiftsWRX).
Thanks to all who added to this FAQ, and all who PM me additional or corrected information.

ECUs to be added :
Apex'I Power FC (if it ever comes out)
Autronic SMC (waiting for PnP units to become available)
Mectronik (??)
Motronic
...more? PM me with a link.

Questions to be added :
What is the resolution of fueling and timing control adjustment?
What is the maximum injector firing time?

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[8Complex]

AEM
www.aempower.com

• Is there a Subaru user base available for this ECU? If so, where?
  No.
  
  
• An estimate of the ECU's pricing?
  $1,868.75 list. Street price will probably be $1,400-$1,500 range.
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Laptop only.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Standalone.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  Plug and Play only. Available 1st qtr 2003. 2002 & 03 WRX.
  
  
• What datalogging capabilities does the ECU have?
  Internal: 512kB memory. Logs up to 15 channels simultaneously. Max record speed is 250 samples per channel (up to 7 channels).
  PC Based: Variable log rate with time limit based only on hard disk size.
  Data Analysis Software: 40+ Channel overlays from a single file, Multiple different file overlays, User definable Math Channels, Time based strip charts, Conditional X-Y plots, Histograms, Can export channel/ time subset to a new log file for sharing.
  
  
• Does the ECU have the ability to control boost pressure?
  Yes, Controls the stock or any aftermarket solenoid Has a 17*21 “open loop” base duty table. Also has a 17*21 closed loop Target boost table. Has a 17 point Boost target table based on vehicle speed. Has a cockpit activated boost target override switch.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  Map can be changed permanently on the fly without the need to ever upload a complete map. Engine must not be running if you do upload an entirely different map.
  
  
• Does the ECU have any sort of knock correction feedback?
  Yes, Uses the factory knock sensor. User can adjust fuel and spark changes made in response to knock.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Fuel Corrections: Intake Air temp., Coolant temp., barometric Pressure,. EGT, Boost Pressure, Battery Voltage, Throttle position, Knock and Individual Cylinder Trims.
  Spark Corrections: Intake Air temp., Coolant temp, Knock and individual Cylinder Trims.
  
  
• What oxygen sensors does the ECU unit utilize?
  Narrow-band or wide-band (UEGO) sensors.
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Both. High impedence injectors can be driven directly, but low impedence injectors need ballasts.
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  Yes, each fully sequential and independently phased. Also has separate injector response table for the staged injectors.
  
  
• What load references can the ECU use for tuning purposes?
  MAP, TPS, 0-5v MAF, Frequency MAF.
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  17 Load x 21 RPM points on the primary fuel and spark maps. Also 17 Load x 21 RPM points on the alternate fuel and spark maps. Spark resolution good to 0.32 degrees. Fuel resolution to 5 uS (0.000005 sec). All load and RPM breakpoints are user adjustable and can be nonlinear.
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Yes
  8 Low Side (Switched Ground) 1.5a drivers
  4 High Side (Switched +12v) 1.5a drivers
  2 4-wire Stepper Motor Drivers (3a max each drive)
  6 Spare Injectors
  2 Spare Coils
  4 RTD Type EGT Inputs
  2 0-5v Analog Inputs
  All spare drivers can be activated based on any combination of RPM, Boost, TPS, Coolant Temp or Vehicle Speed.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  Yes, will run off the stock sensor. Other types can also be used including 60-2 (Bosch/Electromotive).

[8Complex]

Electromotive TEC-II
www.electromotive-inc.com

• Is there a Subaru user base available for this ECU? If so, where?
  Yes. www.vishnutuning.com
  
  
• An estimate of the ECU's pricing?
  N/A
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Laptop only.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Stand-alone.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  Yes, kit. Vishnu Performance delivers the units as kits for nearly any available model Subaru. Price range $2000-2500.
  
  
• What datalogging capabilities does the ECU have?
  Laptop hard drive only.
  
  
• Does the ECU have the ability to control boost pressure?
  Yes, via. additional wastegate solenoid.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  No, unit must be reset when new map is uploaded.
  
  
• Does the ECU have any sort of knock correction feedback?
  Yes.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Intake Air temp., Coolant Temp., Battery Voltage.
  
  
• What oxygen sensors does the ECU unit utilize?
  Narrow-band only.
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Both.
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  No.
  
  
• What load references can the ECU use for tuning purposes?
  MAP only.
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  7 user-definable load points x 7 user-definable RPM points.
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Yes, 1 output.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  No, one will need to be fabricated.

[8Complex]

Electromotive TEC3
www.electromotive-inc.com

• Is there a Subaru user base available for this ECU? If so, where?
  Yes. www.vishnutuning.com
  
  
• An estimate of the ECU's pricing?
  $1850
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Laptop only via serial cable.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Stand-alone.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  Yes, kit. Vishnu Performance delivers the units as kits for nearly any available model Subaru. Price range $2350-2850.
  
  
• What datalogging capabilities does the ECU have?
  To either onboard memory or a laptop's hard drive.
  
  
• Does the ECU have the ability to control boost pressure?
  Yes.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  No, ECU must be reset.
  
  
• Does the ECU have any sort of knock correction feedback?
  Yes.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Manifold Air temp, Coolant temp., Battery Voltage.
  
  
• What oxygen sensors does the ECU unit utilize?
  Narrow-band. Wide-band will be added in the future.
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  8 high impedance or 16 low impedance injectors.
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  Yes.
  
  
• What load references can the ECU use for tuning purposes?
  MAP
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  16x16 maps, MAP vs. RPM, Increments of adjustment are set by the user.
  16x16 maps, MAP vs. RPM, Increments of adjustment are set by the user.
  16x16 Ignition Advance map
  16 point curve for Dual spark plug timing split
  20 point curve for Manifold Air Temp timing correction
  20 point curve for Coolant Temp timing correction
  16x16 map for desired A/F ratio targets, with user selectable EGO feedback parameters
  16x16 map for 16x16 map for fuel injector pulsewidth (including duty cycle)
  16x16 map for staged fuel injector pulsewidth
  8 point curve for TPS/MAP blend (to assist in achieving steady Idle)
  20 point curve for Manifold Air Temp each fuel and timing correction
  20 point curve for Coolant Temp each fuel and timing correction
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Yes, 4.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  No. One will need to be fabricated.
  

[8Complex]

Haltech E6K
www.haltech.com

• Is there a Subaru user base available for this ECU? If so, where?
  Yes, spread among the i-Club.
  
  
• An estimate of the ECU's pricing?
  ~$1150-1300
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Laptop only.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Stand-alone.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  No. Wire-in only.
  
  
• What datalogging capabilities does the ECU have?
  Onboard or laptop hard drive datalogging.
  
  
• Does the ECU have the ability to control boost pressure?
  Yes, two wastegate control maps available.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  Yes, no reset necessary. Also available on new software is ability to configure two maps within the unit and an external switch to swap between them on the fly.
  
  
• Does the ECU have any sort of knock correction feedback?
  No.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Intake Air temp., Coolant temp., Barometric Pressure, Battery Voltage. Also in the new software Exhaust temp., and Exhaust Pressure.
  
  
• What oxygen sensors does the ECU unit utilize?
  Narrow-band and 0-5v input from a WB controller.
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Both. 16 high impedence or 8 low impedence injectors.
  
  
• Will the ECT drive an additional 4 injectors (8 injector staged setup)?
  Yes.
  
  
• What load references can the ECU use for tuning purposes?
  MAF, MAP, TPS.
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  32 load points x 22 or 17 RPM points (22x500RPM (0-10,500) or 17x1000RPM (0-16,000)).
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Yes. 4 PWM outputs, 2 digital outputs (varies depending on how many injectors are being used).
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  Yes, no fabrication necessary.

[8Complex]

Link Plus/Link 2
link-electro.co.nz

• Is there a Subaru user base available for this ECU? If so, where?
  Yes, spread among the i-Club.
  
  
• An estimate of the ECU's pricing?
  ~$1300
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Both.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Stand-alone.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  Yes. All 2.5RS's, and WRX models are supported through plug and play units from AMR.
  
  
• What datalogging capabilities does the ECU have?
  To laptop hard drive or onboard memory.
  
  
• Does the ECU have the ability to control boost pressure?
  YES
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  Yes, it can be switched on the fly, without a reset.
  
  
• Does the ECU have any sort of knock correction feedback?
  YES, programmable.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Coolant temp., Intake Air temp., Barometric Pressure
  
  
• What oxygen sensors does the ECU unit utilize?
  Narow-band.
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Both. High impedence injectors can be driven directly, but low impedence injectors need ballasts.
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  Unsure- can fire 8 injectors, looks like you could fire to fire 2 injector per cylinder, but not only have one kick in at a higher pressure. 2 additional drive can be configured to rpm or %ff
  
  
• What load references can the ECU use for tuning purposes?
  MAP, TPS, and MAP+TPS
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  200 zones
  20 0-10000RPM in 500 rpm increments
  10 0-300kpa (29psi boost) in 30 kpa increments.
  Linear interpolation between points.
  Non adjustable unit scale
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Yes, 2 additional devices.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  Runs off stock unit
  

[8Complex]

MoTeC M4
www.motec.com

• Is there a Subaru user base available for this ECU? If so, where?
  No.
  
  
• An estimate of the ECU's pricing?
  $1600-2000
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Laptop only.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Stand-alone.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  No, kits/packages are not available for any model.
  
  
• What datalogging capabilities does the ECU have?
  Onboard logging only.
  
  
• Does the ECU have the ability to control boost pressure?
  Yes. Main Table (3D) 20 RPM sites x 10 Throttle sites or 10 Gear sites.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  Unknown.
  
  
• Does the ECU have any sort of knock correction feedback?
  Changes can be made to the map itself on the fly. Does not need to be reset.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Intake Air temp., Coolant temp.
  
  
• What oxygen sensors does the ECU unit utilize?
  Narrow-band or wide-band (optional).
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Both.
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  Yes.
  
  
• What load references can the ECU use for tuning purposes?
  MAP, MAF, or TPS.
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  Fuel:
  Main Table (3D) 40 RPM sites x 21 Load sites (840 points)
  End of Injection (3D) 20 RPM sites x 11 Load sites
  Individual Cylinder Tables (3D) 20 RPM sites x 11 Load sites
  Hi/Lo Injector Balance (3D) 20 RPM sites x 11 Load sites
  Hi/Lo End of Injection (3D) 20 RPM sites x 11 Load sites
  Ignition:
  Individual Cylinder Tables (3D) 20 RPM sites x 11 Load sites
  Rotary Split 20 RPM x 11 Load sites
  Dwell Time 20 RPM x 11 Battery sites
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Yes, 2 additional configurable outputs.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  Yes, will run off the stock setup.

[8Complex]

Pectel T6 Motorsport
www.pectel.co.uk

• Is there a Subaru user base available for this ECU? If so, where?
  Yes. User base is very small, would suggest that interested parties contact either myself (pat@22b.com) or Lateral Performance (mark@lateralperformance.co.uk) for any inquiries.
  
  
• An estimate of the ECU's pricing?
  Current pricing is UKP 2095+VAT (UKP 2461.62) for the ECU. (roughly $3,500 + VAT)
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Programming is by laptop only via RS-232 (built in drivers, no need for special adapter cable) or CAN 2.0B interface. Sample software available form www.pectelusa.com
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Stand-alone.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  It seems that Lateral Performance has been making kits of sorts. In their words: "While the ECU itself is not delivered as a plug & play solution, we have been making complete engine wiring harnesses, that should vastly simplify installation,. Additionally we can supply the required ancillaries. It will require removal of the cam belt to change the timing wheel."************
  
  
• What datalogging capabilities does the ECU have?
  Logging is to internal memory, with a choice of 40 parameters from over 200, user selectable sampling speed per channel, up to 1k samples/sec.
  
  
• Does the ECU have the ability to control boost pressure?
  Yes. Boost pressure control is a PID feedback system with a base duty table and PID feedback control. Targets are boost pressure, turbine shaft speed or restrictor pressure. Will control air injectors for dual port wastegate actuators (wastegate & antiphase wastegate control). Desired boost is a function of RPM and throttle opening, with modifications for various parameters (eg EGT, BAP), and also boost control dial.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  The ECU stores two maps, these can be switched on the fly without a laptop. With a laptop a new calibration can be downloaded and will take immediate effect but will be lost after a power cycle unless flashed into the ECU. The only parameters that require a restart are hardware or engine setup related (eg the number of cylinders; if the engine can grow more cylinders while it's running, it's cleverer than this ECU! )
  
  
• Does the ECU have any sort of knock correction feedback?
  Current issue T6 2000 ECUs with 1-21 firmware have detonation control as part of the base package. It can detect individual cylinder knock and will correct accordingly.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  There are a vast number of corrections; basically if it makes sense to correct for something, it will do it. Too many to list here, look at the demo software for details. Just as a teaser it will do ignition correction for wastegate error (you can use this to increase or decrease exhaust gas energy to achieve desired boost pressure more rapidly). Of course you get all the coolant / voltage corrections you could ever need.
  
  
• What oxygen sensors does the ECU unit utilize?
  Standard issue is one NTK UEGO wideband lambda sensor. Option of second. Also option of no UEGO interface, will run Bosch LSM11. Additionally two "spare" lambda inputs can be connected to any spare analogue input (4-off). Closed loop lambda control with PID controller per bank (useful on flat 6 with separate exhausts per side). 3D lambda target table (set cell to zero to run open loop at that point)
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Injector impedance is software selectable, but you can't mix types.
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  Yes. Will run up to flat six with staged sequential injection.
  
  
• What load references can the ECU use for tuning purposes?
  For T6 2000 1-21 Turbo profile, the load is Manifold Absolute Pressure.
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  T6 permits up to 24 load sites and 24 RPM sites, but no more than 400 cells (ie 20x20 is valid but 21x20 is not, however 19x21 is valid). Load is adjustable in 1 millibar increments. RPM is adjustable in 1 RPM increments. Injection time has 10 microsecond resolution in the map, 2 microsecond at the output. Ignition timing has 0.25 degrees resolution in the map and output.
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Yes. Up to 10 PWM outputs available (there are 8 dedicated injector outputs, 4 dedicated ignition outputs, 6 dedicated PWM outputs, and four Ignition/Injector/PWM outputs, so depending on assignment there are between 6 and 10 PWM outputs). All PWM outputs support true PWM functions, there are no simple on/off outputs, but on/off functions may be assigned to PWM outputs.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  The T6 require an N-M crank trigger. Common patterns are 18-1, 36-1 and 60-2. We wire erode 36-1 discs to a tolerance of 7 microns and use optical sensors for greatest timing accuracy. The ECU will directly interface to magnetic, hall effect and optical (with schmitt trigger output) sensors. Both crank and cam sensors are individually selectable and calibrated. Cam pattern is easy to modify, needs a single pulse; timing of the pusle is user selectable. Offset of missing teeth is user selectable. The only mandatory signal the T6 needs to run an engine is crank, it has the ability to fail-over to a second crank pickup.

Special thanks goes out to Pat (pat@22b.com) who emailed me with all the great information on this ECU.

[8Complex]

SDS EM-4 F
www.sdsefi.com

• Is there a Subaru user base available for this ECU? If so, where?
  No, however they do have base maps for many vehicles available.
  
  
• An estimate of the ECU's pricing?
  $1165
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Handheld Controller.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Stand-alone.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  No.
  
  
• What datalogging capabilities does the ECU have?
  This unit has no datalogging capabilities.
  
  
• Does the ECU have the ability to control boost pressure?
  No, must use additional boost controller.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  Unknown.
  
  
• Does the ECU have any sort of knock correction feedback?
  Yes, optional.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Intake Air temp., Coolant temp.
  
  
• What oxygen sensors does the ECU unit utilize?
  Narrow-band only.
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Both, must specify at time of order. Low impedence injectors will need resistor packs to operate correctly (makes them function more sloppy then normally configured injectors).
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  Yes.
  
  
• What load references can the ECU use for tuning purposes?
  MAP only & TPS.
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  Unknown load points x 36 RPM points (x 250 RPM up to 9,000 RPM)
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Unit can't drive any external hardware.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  No, one will need to be fabricated.

[8Complex]

TurboXS UTEC
www.turboxs.com

• Is there a Subaru user base available for this ECU? If so, where?
  Yes, spread among the i-Club. Also www.wrxhackers.com
  
  
• An estimate of the ECU's pricing?
  $1000
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Laptop or any device capable of connecting through a Terminal (TTY) program.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Both. Stand-alone timing control, piggyback style fueling control.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  Yes, Plug and Play package only. Please check with TurboXS directly as to current model & years applicability.
  
  
• What datalogging capabilities does the ECU have?
  Yes, output via. Terminal (TTY) program, no onboard logging memory.
  
  
• Does the ECU have the ability to control boost pressure?
  Yes.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  Yes, via. to be released remote switch. No resetting necessary.
  
  
• Does the ECU have any sort of knock correction feedback?
  Yes.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Intake Air temp., Coolant temp.
  
  
• What oxygen sensors does the ECU unit utilize?
  Stock wide-band.
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Both, via. software update.
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  No.
  
  
• What load references can the ECU use for tuning purposes?
  MAP or TPS, currently only MAP (will be updated via. software update).
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  11 load points (adjustable, first pint dedicated to closed-loop modification) x 36 RPM points (250-9000rpm).
  Fuel adjustable by 0.1% MAF voltage offset.
  Timing adjustable by 0.1° increments.
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Yes, 1 extrernal 12V source.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  Yes, stock.

[8Complex]

Wolf 3D v3.0
www.wolfems.com

• Is there a Subaru user base available for this ECU? If so, where?
  No.
  
  
• An estimate of the ECU's pricing?
  $1250
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Both.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Stand-alone.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  No.
  
  
• What datalogging capabilities does the ECU have?
  Yes, by unknown means.
  
  
• Does the ECU have the ability to control boost pressure?
  Yes, via. additional solenoid.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  Unknown.
  
  
• Does the ECU have any sort of knock correction feedback?
  Unknown.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Unknown.
  
  
• What oxygen sensors does the ECU unit utilize?
  Unknown.
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Unknown.
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  Unknown.
  
  
• What load references can the ECU use for tuning purposes?
  MAP, else unknown.
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  8 loads points (12.5% load increments) x 17 RPM points (500-8500+)
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  Unknown.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  No, one will need to be fabricated.

[8Complex]

XEDE
www.vishnutuning.com/xede.htm

• Is there a Subaru user base available for this ECU? If so, where?
  Not yet, but soon... www.wrxhackers.com . The XEDE will be available in Feb.
  
  
• An estimate of the ECU's pricing?
  $795 or $895 with user-tuning software.
  
  
• Is the ECU programmable by laptop, handheld controller, or both?
  Laptop only.
  
  
• Does the ECU function in a "stand-alone" or "piggyback" fashion?
  Piggy-back.
  
  
• Is the ECU delivered as a "kit", or a "plug and play" package? For what models?
  PnP version will be available for the WRX, non-PnP will be available for other models as well.
  
  
• What datalogging capabilities does the ECU have?
  Can datalog all sensor input and outputs (TPS, MAP, MAF, Ign timing offsets).
  
  
• Does the ECU have the ability to control boost pressure?
  Yes.
  
  
• Does the ECU allow for maps to be switched on the fly, and will it need to be "reset" before the map will take effect?
  Yes, on the on-the-fly. No, no need to reset ECU.
  
  
• Does the ECU have any sort of knock correction feedback?
  Yes, the stock knock correction system still works.
  
  
• What type of correction factors (coolant temp, air temp, etc) does the ECU use?
  Relies on factory (or remapped) compensation factors.
  
  
• What oxygen sensors does the ECU unit utilize?
  None. Closed-loop fuel control is provided by Stock ECU.
  
  
• Will the ECU drive low or high impedance injectors? Both impedance types?
  Relies on factory high imp. injector drivers.
  
  
• Will the ECU drive an additional 4 injectors (8 injector staged setup)?
  Yes.
  
  
• What load references can the ECU use for tuning purposes?
  MAP, TPS or MAF (user-selectable).
  
  
• What resolution does the ECU offer in tuning (how many load points, RPM points, and what increments of adjustment)?
  20x20 with user definable breakpoints. 0.1 increments for MAF, MAP, TPS and Ign. timing.
  
  
• Does the ECU have the ability to drive external hardware? If so, how many, and what type?
  2 built-in drivers for external boost control, additional injectors, aux. solenoids, etc.
  
  
• Will the ECU run off of the stock crank position sensor? Or will one need to be fabricated?
  Yes. Runs off all stock sensors.