projectLAMBDA Tuner 1.2.5 Released

Version 1.2.5 is now available for DOWNLOAD.


New Features

  • Added trouble code reader
  • Added more knock control settings
  • JDM ECUs: Added coil dwell settings
  • AD983, AE800, AE801, AE802, AE860, AF040, AF331, AH960: Now supported

Bug Fixes

  • Fixed an issue when initiating the BlueSSM connection.

 

If you have a JECS ECU that is not supported yet, please let us know using the Vehicle Request Form. Your ECU can usually be added to the software within a few days.

projectLAMBDA Tuner 1.2.2 Released

Version 1.2.2 is now available for DOWNLOAD.


New Features

  • License updating now uses copy/paste text instead of license files.
  • AF041, AE831: Boost maps added to live tuning
  • AG292 (EJ206 Rev C): Now supported

Bug Fixes

  • JDM ECUs: MAF bias now works properly when MAF limit is changed. Log parameters updated.

 

If you have a JECS ECU that is not supported yet, please let us know using the Vehicle Request Form. Your ECU can usually be added to the software within a few days.

projectLAMBDA Tuner 1.2.1 Released

Version 1.2.1 is now available for DOWNLOAD.


New Features

  • ECU reset command
  • Read ECU RAM for troubleshooting and debugging
  • AG302: Boost maps added to live tuning

Bug Fixes

  • AD984: Can now be flashed safely
  • AF041, AE831: Can now be licensed and reflashed

 

If you have a JECS ECU that is not supported yet, please let us know using the Vehicle Request Form. Your ECU can usually be added to the software within a few days.

JDM Legacy BE/BH base maps now available!

Legacy EJ206/EJ208 (Rev A,B,C,D) Base Map ECU Reflash: 380 CAD

  • Tunes your stock ECU to eliminate knocking caused by aggressive JDM spark timing
    • Spark timing reduced to safe level for Canadian pump gas
    • Revised boost control for higher boost and quicker turbo spool
    • Reduced torque dip during primary to secondary turbo switchover
    • 180 kph speed limiter deleted
    • Radiator fans turn on earlier to keep engine cooler
    • MAF sensor range increased 35%
    • ECU will get a Project Lambda Tuning license which allows reflash using BlueSSM (Rev A,B,C only)
  • Maps available for 91 and 94 octane
  • Car will be data-logged to verify engine is running safely with reflash

Text David from Drivehard Performance @ 604-711-4564 to book an appointment or call 604-270-2494 for further inquiries.


Pro Tuning Service

  • ECU will be custom tuned for your modifications and fuel octane
  • Wideband Air/Fuel Sensor will be temporarily installed if you do not already have one
  • Performance gains are measured with road dyno software; dyno tuning available at additional cost
  • Please make sure your vehicle is in good condition or let us know of any issues that should be addressed before proceeding with tuning
  • Typically 4 – 6 hours labour @ 120$/h

Text David from Drivehard Performance @ 604-711-4564 to book an appointment or call 604-270-2494 for further inquiries.

 

Results

Example results for stock Legacy B4 RSK 5MT EJ208 (Rev C) with hose 10 modification.

94 octane whp wtq (lbf-ft)
Stock (5C day) 187 172
Stock (-6C day) 209 198
Base Map 217 206
Pro Tune 228 212

 

91 octane whp wtq (lbf-ft)
Stock N/A* N/A*
Base Map 206 194
Pro Tune 218 200

Power measurements use SAE correction factor (25 C, 0.99 bar)
*Stock measurement on 91 octane could not be completed safely due to excessive knocking

ej208c_boost
Boost curve for Rev C. Rev B primary boost target is 12.5 psi, secondary target is the same as Rev C.
 

projectLAMBDA Tuner 1.2 Released – JDM/EDM/ADM ECU Support!

Version 1.2 is now available for DOWNLOAD.


New Features

  • JDM/EDM/ADM ECUs can now be read and reflashed
  • Map editing for the following vehicles:
    • SF Forester EJ205
    • GC/GF Impreza STI EJ207
    • BE/BH Legacy B4 RSK EJ208
  • Following vehicles will be added for next release:
    • GC/GF Impreza 2000 EJ205
    • GC Impreza P1 EJ207

If you have a JECS ECU that is not supported yet, please let us know using the Vehicle Request Form. Your ECU can usually be added to the software within a few days.

projectLAMBDA Tuner 1.1 Released – New Data Logging Support!

Version 1.1 is now available for DOWNLOAD.


New Features

  • Data logging feature for monitoring and recording ECU operating parameters
  • More maps for USDM SD ECUs: Ignition Coil Dwell, Temperature Sensor Calibrations, Warmup Fuel and Transition Fuel Maps
  • Map editing support for JDM Legacy B4 Twin-Turbo (EJ208) – Reflash support is coming soon!

Bug Fixes

  • Coolant temperature index for some maps now display correctly. ECU tuning is not affected and there are no compatibility with older tune files

EJ251 Tuning Part 1: Engine Size, Fuel Type and Injectors

Configuring injector settings is one of the first things to do when setting up your base map. The two main parameters for configuration injectors are ‘Load Scalar’ and ‘Airflow Scalar’. These should also be updated if the engine’s size (displacement) has been changed or you’re running a fuel other than straight gasoline.

For easy reference, I’ve done the calculations for some commonly used injectors so that you don’t have to. Just copy and paste the numbers into your current tune.

These load and airflow scalars were calculated a 2.5L engine running on gasoline. If you’ve got a different engine displacement or are running a fuel other than gasoline (such as E85), see the parameter explanations after the table.

Latency Latency
Top Feed Injector Part Number Color Flow Rate (cc) Load Scalar Airflow Scalar Slope (ms/V) Offset (ms)
EJ251 16611AA430 Grey 280 0.0723 0.9621 0.10 1.76
EJ205 16611AA521 Light blue 420 0.0482 1.4432 0.12 2.36
EJ207 16611AA510 Pink 550 0.0368 1.8899 0.12 2.36
EJ255/EJ257 16611AA720 Dark blue 550 0.0368 1.8899 0.13 2.62

Latency Latency
Side Feed Injector Part Number Color Flow Rate (cc) Load Scalar Airflow Scalar Slope (ms/V) Offset (ms)
EJ205/EJ207 16611AA370 Yellow 500 0.0405 1.7181 0.11 2.03
EJ255/EJ257 16600AA170 Yellow 500 0.0405 1.7181 0.11 2.14

Note: Flow rates are estimated based on ECU data. Use flow test data when available.

 

Load and Airflow Scalars

These two parameters can be found under ‘Configuration’ in the map tree. The ‘load scalar’ is a combination of injector flow rate, engine displacement and stoichiometric ratio all in one parameter.  It is used to calculate how much fuel is needed based on the volumetric efficiency map. ‘Airflow scalar’ is used to calculate the mass airflow of the engine from engine load and engine speed (RPM).

How to calculate what your new load and airflow scalars should be:

For an injector change:

NEW LOAD SCALAR = OLD LOAD SCALAR x (OLD INJECTOR SIZE / NEW INJECTOR SIZE)

NEW AIRFLOW SCALAR = OLD AIRFLOW SCALAR x (NEW INJECTOR SIZE / OLD INJECTOR SIZE)

For an engine displacement change:

NEW LOAD SCALAR = OLD LOAD SCALAR x (NEW DISPLACEMENT / OLD DISPLACEMENT)

For a stoichiometric ratio change:

NEW LOAD SCALAR = OLD LOAD SCALAR x (OLD STOICH RATIO / NEW STOICH RATIO)

NEW AIRFLOW SCALAR = OLD AIRFLOW SCALAR x (NEW STOICH RATIO / OLD STOICH RATIO)

For multiple changes you can chain the equations together in any order to get the final value.

 

Injector Latency

Fuel injectors don’t open instantly. There is a lag time between when the ‘on’ signal is sent and when the fuel injector fully opens. This is called ‘Injector Latency’. This latency changes with voltage. At lower voltages, the injector will take longer to open. At higher voltage, it opens faster.

To compensate for injector latency and inject the correct amount of fuel, the ECU adds latency to the fuel injector pulse width.

If you’ve swapped injectors you will need to use the latency values for the new injectors. Incorrect latency settings can cause fueling consistency problems. This is most noticeable at idle and low engine load.

The following equation describes how the ECU calculates injector latency:

LATENCY = OFFSET - (SLOPE x VOLTAGE)

‘Slope’ and ‘Offset’ are two parameters which can be modified by re-flashing. They are found under the ‘Fuel Injectors’ group in the map tree. Slope determines how quickly the latency falls with increasing voltage. Offset is the starting point from which the slope subtracts.

 

Cranking Base Injector Pulse Width

This map is found under the ‘Fuel – Base’ group. It sets the injector pulse width when starting the engine. Scale the entire map down when using larger injectors. Do the opposite for smaller injectors. These values already include injector latency, so you may want to take that into account when making changes. Once the engine gets to about 400 rpm the ECU will stop using this map and switch over to regular pulse width calculations.

 

Minimum Injector Pulse Width

Also found under the ‘Fuel Injectors’ group. This limits the minimum pulse width that the ECU is allowed to use. When pulse width times get very low, the injector doesn’t fully open and the flow rate won’t be accurate. If you’ve got larger injectors you may find reducing this helps solve rich conditions at low load and idle.

 

projectLAMBDA Tuner 1.0.2 Released

Version 1.0.2 is now available for DOWNLOAD.


Change Log

  • Added support for 2002 Impreza 2.5L (USDM), 2002 Forester 2.5L (USDM)
  • Bug Fixed: Startup on Windows 7 systems prevented by ‘api-ms-win-core…’ DLL not found error
  • Bug Fixed: Sometimes .tune file is corrupted on save