BMW N54 Pro PNPECU Wiki V3

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PNPECU MaxxECU Pro N54 solution

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This page refers to version 3 PNPECU N54 solution only. Make sure to check the adapter tag for your version.

5/11/2022 - Version 3 is latest.

PNPECU has developed the N54 solution to satisfy customer requests to allow the N54 engine to be operated without GDI and with PFI instead. This allows most tuners to tune the engine without having to have any knowledge of GDI systems that at this current time are not general knowledge in the standalone tuner segment of the market as well as the freedom to tune it without OEM ECU tuner limits and restrictions.
The water pump, oil level sensor and alternator are additional features thanks to MaxxECU providing the hardware and software to communicate with these external hardware devices.
The EKPM3 is also controlled by the MaxxECU

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


• 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

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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.

For direct PNP communications with a stock BMW 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 transmissions to the emulation compatibility list.

100% compatible with all manual gearboxes!

Specific fundamental requirements of the kit

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• GDI Injectors removed, and plugs/blanks fitted - not supplied and not available from PNPECU
• Port fuel injection setup installed - fuel rail, regulator is not strictly required but common to fit, adapter plate or new intake manifold suitable for injector fitting - not supplied and not available from PNPECU
• Port fuel injectors installed - With the Race and Pro ECU these can be low impedance or high impedance, with Sport they will have to be high impedance - not supplied, some options available from PNPECU

N54 OEM Sensors Usage

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• Boost and Map sensor are not required but have been wired for monitoring, the pressure port on the ECU is used for all fueling and ignition calculations and needs to be connected post throttle body on the intake manifold, this simplifies the control strategies required greatly and makes it easier for tuners to get started with the tuning process. If the user is going above 3bar boost, then an external map sensor is required to be fitted.
• Post cat sensors are not used
• GDI rail pressure - not used

• Knock sensors - used as OEM
• Air temperature - It´s a part of the boost sensor and so should not be removed.
• Coolant temperature - used as OEM
• Pedal position channels 1 and 2 - used as OEM
• Throttle body position channels 1 and 2 - used as OEM
• Lambda sensor front bank - used as OEM
• Lambda sensor rear bank - not available on Race except using a WBO module, available on Pro
• Low pressure fuel system pressure - used as OEM
• Clutch switch - used as OEM
• Vanos triggers and camsync - used as OEM
• Vehicle Speed Sensor Rear Right - used for vehicle speed
• Oil level and temperature sensor

N54 OEM Actuator Usage

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• Ignition coil wiring - see options below for more details
• Tachometer signal
• Electric Fan PWM control
• Vanos Intake and Exhaust
• Wideband sensor heaters
• Electric thermostat
• Wastegate solenoids
• Electronic throttle
• Fuel pump control via canbus
• Alternator via BSD
• Waterpump via BSD
• Exhaust flap

CAN BUS Compatibility

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5/11/2022 -
• E46 - compatible with$h2_header as $i => $txt 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 N54 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

Input and Outputs

Pro - Ell EGT inputs are spare, 13 Analog inputs are spare, 6 digital inputs are spare, 7 Low side outputs are spare, 7 High side outputs are spare, 9 Injector outputs are spare (can be used as low side outputs), CAN 2 is spare, 3 5V output supplies are spare, 1 5-10V supply is spare.$h2_header as $i => $txt

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
• 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

Injector harness
This is a selectable option so that the webstore doesn´t incorrectly calculate shipping cost

• EV1 - Junior power timer connectors, also known as Bosch 2 pin connectors
• EV6 - for use with EV6 injector connectors
• EV14 - for use with EV14 injector connectors

Pro adapter pinout information

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Below is the pin functions of the N54 V3 adapter. The ignition option dictates if the Molex connector is in the adapter or not.

PRO Connector 1 - 48pin

Pin number	Function	Information
A1	GPO 5	BSD
A2	IGN 1
A3	IGN 2
A4	GPO 8	Tacho output
B1	GPO 6	Spare output 14/9 connector
B2	IGN 3
B3	IGN 4
B4	GPO 1	FAN PWM output
C1	GPO 7	BSD
C2	IGN 5
C3	IGN 6
C4	GPO 2	VANOS Intake output
D1	WBO2 Heater Front output
D2	IGN 7	Spare 0/5v output
D3	IGN 8	Spare 0/5v output
D4	GPO 3	VANOS Exhaust output
E1	CAN High	PT-Bus
E2	CAN Low	PT-Bus
E3	GND Shield
E4	GPO 4	Electric thermostat output
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 Temp input 8/4 Connector
J2	AIN 2	Clutch Switch
J3	AIN 3	PPS1 input
J4	AIN 4	PPS2 input
K1	INJ 1
K2	INJ 2
K3	DIN/VR 1	Exhaust cam input
K4	DIN/VR 2	Oil switch
L1	INJ 8	Wastegate rear bank
L2	INJ 7	Wastegate front bank
L3	INJ 6
L4	Power GND
M1	INJ 3
M2	INJ 4
M3	INJ 5
M4	12V

Pro Connector 2 - 32pin

Pin number	Function	Information
A1	EGT 1+
A2	EGT 2+
A3	EGT 3+
A4	EGT 4+
B1	EGT 1-
B2	EGT 2-
B3	EGT 3-
B4	EGT 4-
C1	EGT 5+
C2	EGT 6+
C3	EGT 7+
C4	EGT 8+
D1	EGT 5-
D2	EGT 6-
D3	EGT 7-
D4	EGT 8-
E1	EGT 9+
E2	EGT 10+
E3	EGT 11+
E4	EGT 12+
F1	EGT 9-
F2	EGT 10-
F3	EGT 11-
F4	EGT 12-
G1
G2
G3
G4
H1	Power GND
H2	Power GND
H3	Power GND
H4

PRO Connector 3 - 48pin Brown

Pin number	Function	Information
A1	DIN/VR 4	VSS
A2	DIN/VR 5	Ethanol Sensor 8/3 Connector
A3	DIN 6
A4	DIN 7
B1	WBO2 2 RCAL
B2	WBO2 2 IP
B3	WBO2 2 VS
B4	WBO2 2 COM
C1	WBO2 2 SHIELD
C2	+5V SENSOR SUPPLY 2
C3	AIN 5	BOOST
C4	GPO 19	EXHAUST FLAP
D1	AIN 6
D2	AIN 7	LOW FP SENSOR
D3	AIN 8	TPS2
D4	GPO 20
E1	GPO 10 WBO HEATER
E2	AIN 9	RAD OUT
E3	AIN 10
E4	GPO 21
F1	INJ 15
F2	AIN 11
F3	AIN 12
F4	GPO 22
G1	INJ 14
G2	IGN 11
G3	IGN 9
G4	GPO 15	SPARE OUTPUT 14/11 CONNECTOR
H1	INJ 13
H2	IGN 12
H3	IGN 10
H4	GPO 16	SPARE OUTPUT 14/12 CONNECTOR
J1	INJ 16
J2	ANA GND
J3	ANA GND
J4	GPO 17
K1	INJ 10
K2	INJ 9
K3	KEY IN 12V	KL15
K4	GPO 18
L1	INJ 11
L2	GPO 12	DBW+
L3	GPO 11	DBW-
L4	Power GND
M1	INJ 12
M2	GPO 13	SPARE OUTPUT 14/10 CONNECTOR
M3	GPO 14	SPARE OUTPUT 8/6 CONNECTOR
M4	12V ECU IN

Pro Connector 4 - 32pin Grey

Pin number	Function	Information
A1	CAN 2 H
A2	CAN 2 L
A3	0-5V OUT 1
A4	0-5V OUT 2
B1	AIN 18
B2	AIN 17
B3	AIN 16
B4	AIN 15
C1	AIN 14
C2	AIN 13
C3	AIN 19
C4	AIN 20
D1	AIN 21
D2	AIN 22
D3	DIN 8
D4	DIN 8
E1	DIN 10
E2	DIN 11
E3	+5V SENSOR SUPPLY 3
E4	5-10V SENSOR SUPPLY
F1	GPO 23-30 FLYBACK
F2	KNOCK 1
F3	KNOCK 2
F4	KNOCK GND
G1	GPO 23
G2	GPO 24
G3	GPO 25	MAIN RELAY 85
G4	GPO 26
H1	GPO 27
H2	GPO 28
H3	GPO 29
H4	GPO 30

Injector loom connector - 14pin without ignition Box

Pin number	Function	Information
1	INJ 1
2	INJ 2
3	INJ 3
4	INJ 4
5	INJ 5
6	INJ 6
7	12V SUPPLY
8	12V SUPPLY
9	GPO 6
10	GPO 13
11	GPO 15
12	GPO 16
13	IGN 7	0/5V Output
14	IGN 8	0/5V Output

Injector loom connector - 14pin with ignition Box

Pin number	Function	Information
1	INJ 1
2	INJ 2
3	INJ 3
4	INJ 4
5	INJ 5
6	INJ 6
7	12V SUPPLY
8	12V SUPPLY
9	GPO 6
10	GPO 13
11	GPO 15
12	GPO 16
13	IGN 7	Low side output
14	IGN 8	Low side output

Auxiliary loom connector - 8pin

Pin number	Function	Information
1	12V SUPPLY
2	Power GND
3	DIN/VR 5
4	AIN 1
5	AIN 6
6	GPO 14
7	5v SUPPLY
8	Analog GND

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	SPARE lOW SIDE OUTPUT	IGN7 SIGNAL FROM ECU CONTROLLED
18	SPARE lOW SIDE OUTPUT	IGN8 SIGNAL FROM ECU CONTROLLED
18	POWER GROUND
20	POWER GROUND

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Last change 08.04.2024, 08:52:46