Useful PIDs to Datalog

2002-2006 2.4 Turbo with a NGC PCM

Ambient Temperature

  • AMB TEMP--Outside Air temp

Knock control

  • KnK ST Retard--show amount of timing retarded for PCM's instant response to Knock

  • KNK LT Retard--show amount of timing retarded for PCM's long term or learned response to Knock. If the PCM sees a consistent amount of ST KR, it will use LT KR to try to keep ST at 0.

Spark

Actual Spark Cy1 (you can do Cyl 2,3,4 also but there's USUALLY little difference) --Final timing advance after all modifiers.

EPDSS

  • RPM

Foundation inputs

  • MPH--Car's speed

Injector Control

  • AVG TOTAL WORKING PW The injectors final pulse width. Duty-cycle = Pulse width x RPM / 1,200,000

Throttle Sensor Input

*More clearly IDs WOT

  • THR POSN---Throttle position sensor voltage-~3.6-3.9v = WOT

Map

  • AV MAP TO USE--Absolute pressure inside your intake manifold (Boost = MAP - BARO)

  • AV TIP TO USE--use min TIP psi as "Baro"

FUEL FLOWS

  • 1/1 LONG TERM ADAP--How much your PCM is adjusting the fuel table--Usually under 15% is fine, Over 20% is borderline, more than 25% is not fine

  • 1/1 SHORT TEM ADAP--Show instantaneous Upstream O2 sensor adjustment to fuel table

  • BARO-- Barometric pressure--Needed for boost calc(Boost = MAP - BARO)

  • PRATIO---MAP/BARO

  • TOTAL VE BANK1

  • TURBO TOTAL AIR PORT MASS FLOW S

COOLANT TEMP

  • ECT--Engine Coolant Temperature

CHARGE TEMP

  • ACT--Air Charge Temperature

    • Measured by ACT sensor in cold pipe right before throttle body

DESIRED FUEL AIR

  • OPEN LOOP FA--Commanded A/F that the PCM is trying to reach

Torque Management

  • TURBO TOTAL TRQ DESIRED

Wastegate Control

  • TURBO WG DC

  • TURBO TRQ POTENTIAL STP

  • TURBO TOTAL AF DES FILTD

  • TURBO AF ERR

  • TURBO WG RPM TERM