8.3 Data log fields 8 TROUBLESHOOTING AND DATA LOGGING
• SPK: Flex Advance: The advancement to the timing due to flex fuel.
• SPK: Fuel cut retard: The retardation to the timing due to over-run fuel cut.
• SPK: Idle Correction Advance: The advancement to the timing due to idle correction.
• SPK: Knock Retard: The retardation to the timing due to knock control.
• SPK: Launch Timing: The spark timing/advance taken from the launch (2-step) system.
• SPK: Launch VSS Retard: The retardation to the timing due to the speed based launch system.
• SPK: MAT Retard: The retardation to the timing due to the MAT retard curve.
• SPK: Nitrous Retard: The retardation to the timing due to the nitrous system.
• SPK: Revlim Retard: The retardation to the timing due to the rev limiter.
• SPK: Spark Advance: The overall ignition advance.This should match the actual timing you see with a
timing light - if not, check the spark settings.
• SPK: Spark Table 1: The looked up spark advance from ignition table 1.
• SPK: Spark Table 2: The looked up spark advance from ignition table 2.
• SPK: Spark Table 3: The looked up spark advance from ignition table 3.
• SPK: Spark Table 4: The looked up spark advance from ignition table 4.
• SPK: Traction retard: The retardation to the timing due to traction control.
• Shaft rpm 1,2: Shaft speed in RPM.
• Status codes: These describe which features are currently active. See “Data log bit fields” for how to see
which bits are active.
Status 1
128 64 32 16 8 4 2 1
Full RPM
sync
Spark table
switching
Fuel table
switching
Sync latch RPM sync Config error Lost data Need to
burn
settings
Status 2
128 64 32 16 8 4 2 1
Closed loop
idle
Overboost
protection
Spark cut Flat shift
active
Launch
control
active
Launch
control
armed
Nitrous
stage 2
active
Nitrous
stage 1
active
Status 3
128 64 32 16 8 4 2 1
Launch on Sequential
shift cut
Soft rev limit 3 step
armed
Test mode
active
3 step
active
T log Fuel cut
Status 4 and 5 are development fields. You can set the Check Engine functionality to use Status 5 to record
sensor ADC counts or input fluctuation levels.
Status 6
128 64 32 16 8 4 2 1
MAP
sample
error
Fan on Idle
advance
mode
Idle VE
table mode
AFR
shutdown
AFR
warning
EGT
shutdown
EGT
warning
Status 7
128 64 32 16 8 4 2 1
Limp home
mode
Check
engine light
A/C on Knock
detected
VVT4 error VVT3 error VVT2 error VVT1 error
Status 8
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 290