BMW S50B32 PNPECU Wiki V2
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PNPECU MaxxECU S50B32 solution
This page refers to version 2 PNPECU S50B32 solution only. Make sure to check the adapter tag for your version.
10/11/2022 - Version 2 is latest.
PNPECU has developed the S50B32 solution to satisfy customer requests to allow the S50B32 engine to be fully controlled
Adapter extra connector information
• 14 Pin Injector loom connector part numbers
• Connector - https://www.te.com/usa-en/product-936126-1.html
• Terminals - https://www.te.com/usa-en/product-5-963716-1.html
Transmission compatibility
This is a complicated subject as at the time of writing there are solutions for external control of DCT, 6HP and 8HP transmissions out of BMWs, at the same time MaxxECU provides it´s standardized can bus output which multiple transmission controllers are able to make use of for just about any transmission out there.
There is no direct support for the original 6HP BMW TCU and is very unlikely it will ever exist.
For direct PNP communications with a stock BMW DCT transmission with a BMW TCU refer to this page - https://www.maxxecu.com/webhelp/advanced-bmw_dct.html
what this means is that the BMW TCU believes it´s listening and talking to an OEM BMW DME.
The MaxxECU is not directly controlling the transmission but sending and receiving signals that emulate the BMW DME.
MaxxECU is working on adding other BMW newer transmissions to the emulation compatibility list.
100% compatible with all manual gearboxes!
S50B32 OEM Sensors Usage
• MAF is not used
• Pre cat lambda sensors are not used
• Post cat sensors are not used
• Air temp sensor is not used - new fast sensor is supplied
• Knock sensors - knock for cylinders 3/4 are not used as only two inputs exist in the MaxxECU
• Clutch switch
• Camshaft signals - used as OEM
• Coolant temperature - used as OEM
• TPS sensor - used as OEM
• Vehicle Speed Sensor Rear Right - used for vehicle speed
• AC signals from vehicle - used as OEM
S50B32 OEM Actuator Usage
• Ignition coil wiring - see options below for more details
• Tachometer signal
• Electric fan
• Fuel pump relay
• Idle control valve
• Vanos advance and retard solenoids for both cams
• Check engine indicator
CAN BUS Compatibility
The E36 the S50B32 originally came in did not communicate with the rest of the vehicle via CAN BUS. However, thanks to the MaxxECU it is possible to fit the engine into other BMWs that require information via CAN BUS
5/11/2022 -
• E46 - compatible with BMWs of similar vintage
• E39 - compatible with BMWs of similar vintage
• E9x - compatible with BMWs of similar vintage
MaxxECU provides OEM BMW CAN BUS output for the above BMW vehicles. It also supports a vast array of other cars which a S5B32 can be fitted to thanks to that. Refer to this webpage for latest options and relevant information - https://maxxecu.com/webhelp/can-oem.html
Options at ordering
Not everyone is going to need or want the same thing with their ECU conversion.
Ignition outputs
• Smart coils - Customer will install logic coils in place of original coil wiring
• IGBT Output box - Stock coils can be retained
• VAG R8 coils and connectors - PNPECU supplied R8 coils, customer will install the coils into the original coil wiring or add their own wiring
• VAG R8 coils and connectors - PNPECU supplied R8 coils, coil adapters also for PNP fitment
MaxxECU DCT Adapter loom
This is a selectable option so that the webstore doesn´t incorrectly calculate shipping cost
EGT Sensor
This is a selectable option so that the webstore doesn´t incorrectly calculate shipping cost
• Single is for when you are planning to monitor pre turbine inlet temperature
• Dual is for when you are planning to monitor pre turbine inlet temperature on a twin setup or each side of the engine
• Six is for when you are planning to monitor individual cylinder temperatures
Injector
This is a selectable option so that the webstore doesn´t incorrectly calculate shipping cost
Race adapter pinout information
Below are the pin functions of the S50B32 V2 adapter. The ignition option dictates if the Molex connector is in the adapter or not.
Race Connector 1 - 48pin
Pin number |
Function |
Information |
A1 |
GPO 5 |
FUEL PUMP |
A2 |
IGN 1 |
|
A3 |
IGN 2 |
|
A4 |
GPO 8 |
TACHO |
B1 |
GPO 6 |
IDLE INVERTING |
B2 |
IGN 3 |
|
B3 |
IGN 4 |
|
B4 |
GPO 1 |
CHECK ENGINE |
C1 |
GPO 7 |
IDLE OPENING |
C2 |
IGN 5 |
|
C3 |
IGN 6 |
|
C4 |
GPO 2 |
AC COMPRESSOR RELAY |
D1 |
WBO2 Heater |
|
D2 |
IGN 7 |
Spare output 0/5v |
D3 |
IGN 8 |
Spare output 0/5v |
D4 |
GPO 3 |
SHIFTLIGHT |
E1 |
CAN High |
Spare |
E2 |
CAN Low |
Spare |
E3 |
GND Shield |
|
E4 |
GPO 4 |
EVAP |
F1 |
Coolant temp input |
|
F2 |
Air temp input |
|
F3 |
WBO2 VREF |
|
F4 |
WBO2 VS |
|
G1 |
5V Supply output |
|
G2 |
TPS |
|
G3 |
WBO2 IP |
|
G4 |
WBO2 RCAL |
|
H1 |
Sensor GND |
|
H2 |
Trigger GND |
|
H3 |
Trigger |
|
H4 |
Home |
EXHAUST VANOS TRIGGER |
J1 |
AIN 1 |
OIL LEVEL |
J2 |
AIN 2 |
Spare input |
J3 |
AIN 3 |
Spare input |
J4 |
AIN 4 |
Spare input |
K1 |
INJ 1 |
|
K2 |
INJ 2 |
|
K3 |
DIN/VR 1 |
VANOS INTAKE CAM POSITION |
K4 |
DIN/VR 2 |
VSS |
L1 |
INJ 8 |
|
L2 |
INJ 7 |
SECONDARY FAN RELAY |
L3 |
INJ 6 |
|
L4 |
Power GND |
|
M1 |
INJ 3 |
|
M2 |
INJ 4 |
|
M3 |
INJ 5 |
|
M4 |
12V |
|
Race Connector 2 - 32pin
Pin number |
Function |
Information |
A1 |
EGT 5+ |
|
A2 |
EGT 6+ |
|
A3 |
EGT 7+ |
|
A4 |
EGT 8+ |
|
B1 |
EGT 5- |
|
B2 |
EGT 6- |
|
B3 |
EGT 7- |
|
B4 |
EGT 8- |
|
C1 |
EGT 1+ |
|
C2 |
EGT 2+ |
|
C3 |
EGT 3+ |
|
C4 |
EGT 4+ |
|
D1 |
EGT 1- |
|
D2 |
EGT 2- |
|
D3 |
EGT 3- |
|
D4 |
EGT 4- |
|
E1 |
Knock GND |
|
E2 |
Knock 1 |
|
E3 |
Knock 2 |
|
E4 |
AIN 6 |
|
F1 |
AIN 7 |
|
F2 |
AIN 8 |
|
F3 |
DIN/VR 4 |
AC REQUEST |
F4 |
DIN/VR 5 |
AC PRESSURE SWITCH |
G1 |
GPO 15 |
VANOS INTAKE ADVANCE SOLENOID |
G2 |
GPO 16 |
VANOS INTAKE RETARD SOLENOID |
G3 |
AIN 5 |
Spare input |
G4 |
Power GND |
|
H1 |
GPO 14 |
FUEL CONSUMPTION |
H2 |
GPO 11 |
VANOS EXHAUST RETARD SOLENOID |
H3 |
GPO 13 |
OIL OUTPUT |
H4 |
GPO 12 |
VANOS EXHAUST ADVANCE SOLENOID |
Ignition box connector - 20pin
Pin number |
Function |
Information |
1 |
IGN 1 FROM ECU |
|
2 |
IGN 2 FROM ECU |
|
3 |
IGN 3 FROM ECU |
|
4 |
IGN 4 FROM ECU |
|
5 |
IGN 5 FROM ECU |
|
6 |
IGN 6 FROM ECU |
|
7 |
IGN 7 FROM ECU |
|
8 |
IGN 8 FROM ECU |
|
9 |
POWER GROUND |
|
10 |
12+ |
|
11 |
IGNITION COIL 1 |
|
12 |
IGNITION COIL 2 |
|
13 |
IGNITION COIL 3 |
|
14 |
IGNITION COIL 4 |
|
15 |
IGNITION COIL 5 |
|
16 |
IGNITION COIL 6 |
|
17 |
IGNITION COIL 7 |
Spare low side output |
18 |
IGNITION COIL 8 |
Spare low side output |
18 |
POWER GROUND |
|
20 |
POWER GROUND |
|
AIR TEMP CONNECTOR EXTENSION - 2pin
Pin number |
Function |
Information |
1 |
AIR TEMP SIGNAL |
|
2 |
ANALOG GROUND |
|
Last change 08.04.2024, 08:52:49