Note: This is the updated plugin adapter to fit MaxxECU STREET, RACE and PRO.
For information on the first generation MaxxECU V1 adapters, downloaded here.
Vehicle cover list
Vehicle |
Engine code |
Year |
LSU sensor |
Note |
Nissan Silvia S14A |
SR20DET |
1993 - 1999 |
External sensor needed |
Make sure of the correct engine code since this model might use different engines |
Nissan Silvia S15 |
SR20DET |
1992 - 2002 |
External sensor needed |
Make sure of the correct engine code since this model might use different engines |
Note: Manual transmission only!
Control options
The MaxxECU adapter for Nissan S14A/S15 with SR20 can be used with all our ECUs
OEM options |
MaxxECU IO |
STREET |
V1/RACE/PRO |
Fuel pump |
INJ 5 |
Yes |
Yes |
Tachometer |
GPO 8 |
Yes |
Yes |
Boost solenoid |
GPO 1 |
Yes |
Yes |
VCT solenoid |
GPO 3 |
Yes |
Yes |
Engine fan |
INJ 6 |
Yes |
Yes |
Vehicle speed |
DIN 1 |
Yes |
Yes |
AC request |
DIN 2 |
Yes |
Yes |
AC fan |
INJ 7 |
Yes |
|
Error light |
GPO 5 |
Yes |
|
Idle solenoid |
GPO 6 |
Yes |
|
AC |
GPO 4 |
Yes |
|
Bluetooth (MDash) |
- |
Yes |
|
Knock sensor(s) |
- |
||
EGT option |
- |
Yes, external |
Yes, direct |
Note: This plugin adapter uses only connector 1 on MaxxECU RACE/PRO units, for extra functionality, the second harness can be added to the RACE ECU.
The PRO ECU have in total of four ECU connectors which could be added for extra functionality: second harness, third harness and/or harness 4.
Plugin adapter description
1 |
MaxxECU CMC connector |
2 |
Vehicle harness adapter |
3 |
16-pin extra connector |
4 |
3-pin extra connector for ex. pressure sensor, analog input 4 (AIN 4) |
5 |
2-pin extra connector for external intake temperature sensor (IAT). Not included |
ECU location and installation
Stock ECU is located behind plastic guard on passenger side floor.
1.Remove the plastic guard where the ECU is located.
2.Disconnect battery from vehicle.
3.Remove and disconnect stock ECU from vehicle harness.
4.Install MaxxECU adapter harness.
5.Route the included MaxxECU MAP-sensor hose to the intake manifold and connect into the MaxxECU.
6.Route wide band lambda cables to exhaust system, install lambda sensor in exhaust and wire the lambda sensor as instructed below.
7.Some models of Nissan SR20 is not equipped with a intake air temperature sensor (IAT) which is recommended to install and connect to the MaxxECU.
3-pin extra connector (0-5V analog input 4)
1 |
Sensor GND |
2 |
Analog input 4 (0-5v) |
3 |
+5V sensor supply |
see also, analog input.
16-pin extra connector
Note: Pinout is from the wire side of the pre-wired cable harness.
Pin |
Description |
Usage |
Note |
1 |
Wide band (VREF) |
|
|
2 |
Wide band (VS) |
|
|
3 |
Wide band (shield) |
|
|
4 |
Wide band (H-) |
|
|
5 |
INJ 8 |
Not available on MaxxECU STREET |
|
6 |
- |
|
|
7 |
- |
|
|
8 |
GPO 7/DIN 3 |
Not available on MaxxECU STREET |
|
9 |
Wide band (IP) |
|
|
10 |
Wide band (RCAL) |
|
|
11 |
+12V |
Output |
|
12 |
+12V |
Output |
|
13 |
Engine GND |
|
|
14 |
AIN 1 |
||
15 |
AIN 2 |
||
16 |
AIN 3 |
Internal wide band lambda (Bosch LSU 4.2) connection
LSU 4.2 wiring with MaxxECU Plugin solutions.
Note: Seen from the wire side of the pre-wired connector.
PIN |
Function (LSU 4.2) |
1 |
VS |
2 |
RCAL |
3 |
+12V |
4 |
H- |
5 |
VREF |
6 |
IP |
See also external wide band lambda wiring.
Optional: Install external intake air temperature (IAT) sensor
Some vehicles are not equipped with an intake air temperature (IAT) sensor and MaxxECU plugin solutions do have the
option to add a sensor.
The intake air temperature (IAT) sensor should be mounted to sense fresh air flow going into the engine.
Depending on the intake manifold construction, the position of the temperature sensor is not given, but preferably mount
the sensor in the intake, or in the pipe before/after the throttle.
IAT wiring
MaxxECU plugin solution are equipped with an optional 2-pin connector for optional IAT wiring.
Mating connector and wires for external IAT sensor.
See also
Example wirings of extra input and output
Last updated: 2017-03-15 by Natanael Ceder
