Using a Racepak IQ3 Dash with a Modular ECU
Pin | Colour | Function | Connection |
Green | Power ground | No connection required if the dash has its own power. Otherwise you can connect this to power ground at the ECU to provide power to the dash | |
Red | 12V supply | No connection required if the dash has its own power. Otherwise you can connect this to ignition switched power at the ECU to provide power to the dash | |
Black | CAN low | CAN L – J2-23 on M2000 / M6000 | |
White | CAN high | CAN H – J2-15 on M2000 / M6000 | |
Drain | Shield wire | No connection |
Setting name |
Options |
Scaling |
Temperature |
Celcius Fahrenheit |
Native = Celcius (0.1 degree resolution) Fahrenheit = C * 9/5 + 32 |
Speed |
km/h mph |
Native = km/h (0.1 km/h resolution) mph = km/h / 1.6 |
Lambda |
Lambda Petrol AFR |
Native = lambda (0.001 resolution) Petrol AFR = lambda * 14.7 |
Fuel / oil pressure |
kPa PSI |
Native = kPa (0.1 kPa resolution) PSI = kPa *0.145 |
MAP |
kPa MGP, kPa MGP, PSIg MGP, PSIg / inHg |
Native = kPa absolute (0.1 kPa resolution) MGP = MAP – baro (still in kPa) MGP PSIg = MGP * 0.145 MGP PSIg = MGP * 0.145, MGP >=0 MGP * 0.290, MGP <= 0 |
CAN address (hex) (remap address in brackets) |
Variable name |
Decimal places |
Units |
750 (768) |
RPM (engine speed) |
0 |
RPM |
751 (769) |
ECT (coolant temp) |
1 |
°C, °F |
752 (76a) |
Oil Pressure |
1 |
kPaG, PSIg |
757 (76f) |
Ignition advance (leading) |
1 |
° BTDC |
755 (76d) |
IMAP (intake manifold absolute pressure) |
1 |
kPaA, kPaG, PSIg, PSIg / -inHg |
753 (76b) |
Pedal / TPS |
2 |
% |
75A (772) |
Lambda |
2 |
Lambda, petrol AFR |
75F (777) |
Vehicle speed |
1 |
km/h, mph |
756 (76e) |
Fuel pressure (gauge) |
1 |
kPaG, PSIg |
758 (770) |
Injector 1 duty |
2 |
% |
754 (76c) |
MAT (air temperature) |
1 |
°C, °F |
765 (77d) |
EGT1 |
1 |
°C, °F |
760 (778) |
Transmission Gear |
2 |
(I don’t know why gear has 2 decimal places by default in the Racepak system) |
761 (779) |
Battery voltage |
2 |
V |
766 (77e) |
Oil temperature |
1 |
°C, °F |