Proecu Subaru BRZ Toyota GT86 Scion FR-S
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ProECU Subaru BRZ Toyota GT86 Scion FR-S Tuning Guide 2012-onward Model Year v1.25 Contents 1. Warning .................................................................................................................................................................... 3 2. Introduction ............................................................................................................................................................... 4 2.1. RaceROM ........................................................................................................................................................ 4 3. ECU Map Descriptions ............................................................................................................................................. 5 3.1. Fuelling ............................................................................................................................................................ 5 3.1.1. Fuel Map (Mode 1 to Mode 4) ................................................................................................................. 5 3.1.2. Injection Control ...................................................................................................................................... 6 3.1.3. Direct Injection Maps ............................................................................................................................... 7 3.1.4. Port Injector Maps ................................................................................................................................... 8 3.1.5. Open and Closed Loop Control .............................................................................................................. 9 3.2. Ignition Timing................................................................................................................................................ 11 3.2.1. Ignition Base Map (Mode 1 to Mode 4) ................................................................................................. 12 3.2.2. Ignition Advance (Mode 1 to Mode 4) ................................................................................................... 12 3.2.3. Advance Multiplier - Coarse Correction ................................................................................................ 13 3.2.4. Knock Correction ................................................................................................................................... 13 3.2.5. Ignition Fine Learning............................................................................................................................ 13 3.2.6. Ignition Compensations......................................................................................................................... 14 3.2.7. Ignition Timing calculation ..................................................................................................................... 14 3.3. Cam Timing .................................................................................................................................................... 17 3.3.1. Cam Timing – Exhaust & Intake ........................................................................................................... 17 3.3.2. Cam Timing - High/Low Det Threshold ................................................................................................. 17 3.4. Torque, Accelerator and Throttle ................................................................................................................... 17 3.5. Other Maps .................................................................................................................................................... 18 3.5.1. Engine Load .......................................................................................................................................... 18 3.5.2. Limiters .................................................................................................................................................. 18 3.5.3. Idle Control ............................................................................................................................................ 19 3.5.4. Boost Control ........................................................................................................................................ 19 3.6. Sensor Scaling ............................................................................................................................................... 20 3.7. Diagnostic Trouble Codes & DTC Limits ....................................................................................................... 21 4. Tuning ..................................................................................................................................................................... 22 4.1. Tuning Questions – Hints and Tips................................................................................................................ 22 4.1.1. Which ROM version to use? ................................................................................................................. 22 4.1.2. Is the VVT working? .............................................................................................................................. 23 4.1.3. My VVT is not working or I have a VVT CEL condition ......................................................................... 23 4.1.4. Can I tune for Ethanol E85 or Flex-Fuel? ............................................................................................. 23 4.1.5. Can I have Launch Control or Speed Density in certain modes? ......................................................... 24 4.1.6. Can my current map switch mode be remembered? ............................................................................ 24 4.1.7. My engine doesn’t start with my new map sensor fitted ....................................................................... 24 4.1.8. Can I switch between MAF and Speed Density on the fly? .................................................................. 24 4.1.9. Can I return my tuned ECU to Stock? ................................................................................................... 24 4.1.10. Will my CVN number be different after tuning?..................................................................................... 24 4.1.11. Can the dealer over flash my “tuned” ECU? ......................................................................................... 25 4.1.12. Why is my forced induction tune lean on full load? ............................................................................... 25 4.1.13. What happens when the MAF hits 5 volts?........................................................................................... 25 4.1.14. I can’t see Custom Maps, Speed Density or Map Switching options. .................................................. 25 4.1.15. Can ProECU open ROM files found on the various forums?................................................................ 25 4.1.16. Can I use a wastegate duty solenoid to control my boost pressure? ................................................... 25 4.2. How to Setup... .............................................................................................................................................. 26 4.2.1. How to setup an Intake or Induction Kit ................................................................................................ 26 4.2.2. How to calibrate Larger Injectors .......................................................................................................... 29 4.2.3. How to rescale the MAP sensor ............................................................................................................ 31 4.2.4. How to setup Speed Density (SD) ** .................................................................................................... 33 4.2.5. How to tune a Forced Induction setup .................................................................................................. 37 4.2.6. How to set up a Boost Limit (fuel cut) ** ............................................................................................... 47 4.2.7. How to set up Boost Control ** ............................................................................................................. 47 4.2.8. How to set up for Ethanol and import Flex Fuel sensor ** .................................................................... 54 4.2.9. How to set up Traction Control ** .......................................................................................................... 61 4.2.10. How to rescale the factory AF Sensor .................................................................................................. 63 4.2.11. How to turn off Long Term Fuel Trims .................................................................................................. 65 5. Glossary ................................................................................................................................................................. 67 Page 2 1. Warning !!! CAUTION !!! EcuTek ProECU tuning tools should only be used by experienced tuners who understand the product and engine calibration. If you do not fully understand this product then you WILL damage your engine, the ECU or your vehicle. Please ensure you fully read all EcuTek manuals BEFORE attempting to use ProECU with your laptop or your