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Last change 25.04.2024, 18:19:17

BMW S50B32 PNPECU Wiki V2

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Contents

  1. PNPECU MaxxECU S50B32 solution
  2. Adapter extra connector information
  3. Transmission compatibility
  4. S50B32 OEM Sensors Usage
  5. S50B32 OEM Actuator Usage
  6. CAN BUS Compatibility
  7. Options at ordering
  8. Race adapter pinout information

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




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