Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
100%
Stock ECU being replaced
MS3PROULTIMA-A-4 Injector out I
MS3PROULTIMA-A-3 Injector out J
MS3PROULTIMA-B-1 Injector out A
GND
OEM-A
Stock ECU being replaced
11Injectors 2 & 6 (No.20)
12Injectors 1 & 4 (No.10)
25Injectors 3 & 5 (No.30)
26Power ground (E01/E02)
MS3PROULTIMA-B-28 Digital frequency in 1
MS3PROULTIMA-A-10 MAT in
MS3PROULTIMA-A-11 CLT in
MS3PROULTIMA-A-25 O2 in
0V sensor
MS3PROULTIMA-A-9 TPS in
OEM-B
Stock ECU being replaced
2Karman-vortex AFM signal (KS)
3Intake air temp (THA)
4Coolant temp (THW)
6Primary O2 sensor (OX1)
9Sensor ground (E2)
11Throttle position sensor (VTA)
MS3PROULTIMA-B-34 Digital Frequency in 1 VR+
OEM-D
Stock ECU being replaced
9Vehicle speed sensor (SPD)
MS3PROULTIMA
MS3PROULTIMA-A
MS3PROULTIMA
3Injector out J
4Injector out I
9TPS in
10MAT in
11CLT in
13Power ground
16Logic ground
18Sensor return
25O2 in
OEM-A-12 Injectors 1 & 4 (No.10)
OEM-A-11 Injectors 2 & 6 (No.20)
OEM-B-11 Throttle position sensor (VTA)
OEM-B-3 Intake air temp (THA)
OEM-B-4 Coolant temp (THW)
GND
0V sensor
0V sensor
OEM-B-6 Primary O2 sensor (OX1)
MS3PROULTIMA-B
MS3PROULTIMA
1Injector out A
3Ground
5Ground
7Ground
9Ground
18Ground
28Digital frequency in 1
34Digital Frequency in 1 VR+
OEM-A-25 Injectors 3 & 5 (No.30)
GND
GND
GND
GND
GND
OEM-B-2 Karman-vortex AFM signal (KS)
OEM-D-9 Vehicle speed sensor (SPD)
MS3PROULTIMA-C
MS3PROULTIMA
17Sensor return
18Sensor return
19Sensor return
20Sensor return
21Sensor return
0V sensor
0V sensor
0V sensor
0V sensor
0V sensor
SP-GND · 8 pins
SP-0V · 9 pins
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.