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