BMW M50 VANOS PNPECU Wiki V3

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PNPECU MaxxECU M50 VANOS 413/506 solution

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This page refers to version 3 PNPECU M50 VANOS solution only. Make sure to check the adapter tag for your version.

19/4/20232 - Version 5 is latest.

PNPECU has developed the M50 solution to satisfy customer requests to allow the M50 engine to be fully controlled

Adapter extra connector information

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• 8 pin Auxiliary connector part numbers
  • Connector - https://www.te.com/usa-en/product-284869-1.html
  • Terminals - https://www.te.com/usa-en/product-5-963716-1.html

Transmission compatibility

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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 4HP/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!

M50 VANOS OEM Sensors Usage

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• MAF is not used
• Lambda sensors are not used
• Air temp sensor is not used - new fast sensor is supplied


• 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
• Knock sensors - used as OEM

M50 VANOS OEM Actuator Usage

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• Ignition coil wiring - see options below for more details
• Tachometer signal
• Fuel pump relay
• Idle control valve
• Vanos advance
• Check engine indicator
• AC Compressor relay
• Fuel consumption output

CAN BUS Compatibility

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The E36/E34 the M50 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 M50 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

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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

ECU Model
• Race - All EGT inputs are spare, 8 Analog inputs are spare, 1 Digital input is spare, 3 Low side outputs are spare, 1 High side output is spare, 2 Logic level outputs are available, 2 H-bridges are available
• Pro - Undetermined

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

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Below is the pin functions of the M50 V3 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	IAC CLOSE
A2	IGN 1
A3	IGN 2
A4	GPO 8 / Tacho output
B1	GPO 6	VANOS
B2	IGN 3
B3	IGN 4
B4	GPO 1	FUEL PUMP RELAY
C1	GPO 7	Spare output
C2	IGN 5
C3	IGN 6
C4	GPO 2	Spare output
D1	WBO2 Heater
D2	IGN 7	Spare output 0/5v
D3	IGN 8	Spare output 0/5v
D4	GPO 3	IAC OPEN
E1	CAN High	Spare
E2	CAN Low	Spare
E3	GND Shield
E4	GPO 4	AC CLUTCH RELAY
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
J1	AIN 1	Spare input
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	Spare Digital input
K4	DIN/VR 2	VSS
L1	INJ 8	Spare output
L2	INJ 7	CHECK ENGINE LIGHT
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	Spare input
F1	AIN 7	Spare input
F2	AIN 8	Spare input
F3	DIN/VR 4	AC REQUEST
F4	DIN/VR 5	AC PRESSURE SWITCH
G1	GPO 15	FUEL CONSUMPTION OUTPUT
G2	GPO 16	Spare output
G3	AIN 5	Spare input
G4	Power GND
H1	GPO 14	Spare output
H2	GPO 11	Spare output
H3	GPO 13	Spare output
H4	GPO 12	Spare output

Auxiliary connector - 14pin without ignition Box

Pin number	Function	Information
1	12V SUPPLY
2	5V SUPPLY
3	POWER GROUND
4	ANALOG GROUND
5	CAN HIGH
6	CAN LOW
7	DIN 1
8	ANALOG IN 1
9	ANALOG IN 2
10	ANALOG IN 3
11	ANALOG IN 4
12	GPO 7
13	GPO 2
14	INJ8

Auxiliary connector - 8pin

Pin number	Function	Information
1	DBW+
2	DBW-
3	ANALAOG IN 5
4	ANALAOG IN 6
5	ANALAOG IN 7
6	ANALAOG IN 8
7	5V
8	ANALOG GROUND

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

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Last change 08.04.2024, 08:52:35