AMP EFI MS3Pro - Page 288

8.3 Data log fields 8 TROUBLESHOOTING AND DATA LOGGING
• MAFload: A calculated load value that works similarly to MAP in a speed-density system. MAFload is equal
to the MAF sensor measurement divided by the theoretical air flow at the current engine RPM if the engine
had 100% volumetric efficiency.
• MAF_volts: The raw voltage input from a voltage MAF sensor.
• MAF_freq: The raw frequency input from a frequency MAF sensor.
• MAP:The measured MAP sensor reading. On typical speed-density installs this should read from 90 to
100kPa during key-on, engine-off (depending on altituted and weather conditions) and between 30kPa and
60kPa at idle.
• MAP accel: MAP based component of acceleration enrichment.
• MAPdot: The rate of change of MAP in kPa per second. Postive numbers indicate the MAP is increasing
and negative numbers indicate it is decreasing.
• MAT: The measured intake manifold air temperature (MAT). Also known as intake air temperature.
• MPG(UK): Fuel economy in miles per UK gallon (4.546 litres).
• MPG(USA): Fuel economy in miles per US gallon (3.8 liters.)
• Nitrous 1,2 duty: The duty cycle to the nitrous solenoids in progressive mode.
• Nitrous added fuel: The fuel pulsewidth (time) adder due to the nitrous system.
• Nitrous timer: The delay timer for the nitrous system.
• O2 (#1-8): Input voltage from narrowband EGO sensors 1-8.
• Port: These fields read the actual status of the input and output pins at the processor. Note that the ports that
drive the fuel and ignition outputs, cam / crank inputs, and PWM signals, may not be sampled fast enough to
tell for certain if these outputs are active. This chart lists both the input or output and the processor port that
corresponds to each number.
Port A
128 64 32 16 8 4 2 1
Injector H Injector G Injector F Injector E Injector D Injector C Injector B Injector A
A7 A6 A5 A4 A3 A2 A1 A0
Port B
128 64 32 16 8 4 2 1
Spark H Spark G Spark F Spark E Spark D Spark C Spark B Spark A
B7 B6 B5 B4 B3 B2 B1 B0
Port EH
128 64 32 16 8 4 2 1
Digital
switched
12V in
Digital
switched in
3
- Fuel pump - Digital
switched in
1
- -
H7 H6 E4 E2 E1 E0
Port K
128 64 32 16 8 4 2 1
- - - - Internal Digital
switched in
2
Internal Tach out
K7 K6 K5 K4 K3 K2 K1 K0
Port MJ
128 64 32 16 8 4 2 1
Internal Stepper
enable
Knock
interface
Knock
interface
Knock
interface
Knock
interface
Stepper out
2
Stepper out
1
J7 J6 M5 M4 M3 M2 J1 J0
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 288