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VR30DDTT Ignition Timing

VR30DDTT Ignition Timing

Mar 24, 2020

 

 

ProECU Nissan/Infiniti VR30DDTT

v1.4

 

 

ProECU Tuning Manual Supplement: VR30DDTT Ignition Timing

 

 

 

 

 

 

Live Data Parameters

  • Ignition Timing Base (°) – Current base ignition timing in degrees BTDC, negative means ATDC

  • Ignition Timing Base lookup (°) – Current ignition timing map output in degrees BTDC, negative means ATDC

  • Ignition Charge air correction (°) – Current ignition timing correction for CAT degrees

  • Ignition Final (°) – Current actual ignition timing in degrees BTDC, negative means ATDC

  • Ignition MBT (°) – Calculated MBT ignition timing in degrees BTDC for use in Torque Calcs and max Limits

  • Ignition Timing (°) – Current actual ignition timing in degrees BTDC, negative means ATDC

  • Ignition Timing Correction (°) – Ignition timing correction amount

  • Knock Retard (°) – Offset due to knock, negative is retard, positive is dynamic advance on GEN 2

      

 

 

Maps

 

Ignition Timing Mode1 (Mode2, Mode3, Mode4)

Four maps, one for each mapswitch mode providing an easy to understand and tune base ignition value in degrees BTDC.  They provide increased precision and headroom for the load axis and increased RPM breakpoints.  It's possible to create multiple maps and use map switching to cycle between each map for testing.

The numbers in these maps may not equal the final timing value as it will be subject to RaceROM corrections, knock control, dynamic advance and other OEM timing corrections.

These maps are not employed in overrun and idle conditions where the OEM ignition control is used.

 

 

 

 

 

 

 

Ignition Timing - Max Allowed Mode1 (Mode2, Mode3, Mode4)

This is the max allowed ignition timing.  It is applied after the base map and corrections but before the torque reduction functions.  It will cap the amount of corrections that can be applied ensuring sensible ignition values if sensors are misread.

 

 

 

 

 

 

Ignition Timing MBT (1, 2, SCV Open & SCV Closed)

This is the calibrated Maximum Best Torque (MBT) timing for the engine in it's OEM form.  The timing will be limited to this value if the requested timing above this.  You should not need to go above this timing value.