BMW N54 Race PNPECU Wiki V5

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PNPECU MaxxECU N54 solution

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This page refers to version 5 PNPECU N54 solution only. Make sure to check the adapter tag for your version.

25/10/2023 - Version 5 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 - Pro only

CAN BUS Compatibility

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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 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
•Stock coils - Stock coils can be retained with stock wiring

Some V5 adapters contain V3 IGBT modules which have physical switches that allow swapping between smart and stock coils with just a flick of a switch. PNPECU V3 IGBT Settings

ECU Model
• Race - All EGT inputs are spare, 2 Analog inputs are spare, 1 Digital input is spare, 1 Low side output is spare, 2 High side outputs are spare, 2 Logic level outputs are available
• 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.

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

Race adapter pinout information

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Below is the pin functions of the N54 V5 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 - BSD
A2	IGN 1
A3	IGN 2
A4	GPO 8 / Tacho output
B1	GPO 6	Spare output 14/9
B2	IGN 3
B3	IGN 4
B4	GPO 1	ELECTRIC FAN PWM
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 14/13
D3	IGN 8	Spare 0/5v output 14/14
D4	GPO 3	VANOS EXHAUST OUTPUT
E1	CAN High
E2	CAN Low
E3	GND Shield
E4	GPO 4	ELECTRIC THERMOSTAT CONTROL
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
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 CONTROL
L2	INJ 7	WASTEGATE REAR BANK CONTROL
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 8/5
F1	AIN 7	LOW PRESSURE FUEL PRESSURE INPUT
F2	AIN 8	TPS2
F3	DIN/VR 4	VSS
F4	DIN/VR 5	Spare input 8/3
G1	GPO 15	Spare output 14/11
G2	GPO 16	Spare output 14/12
G3	AIN 5	BOOST SIGNAL INPUT
G4	Power GND
H1	GPO 14	Spare output 8/6
H2	GPO 11 - DBW-
H3	GPO 13	Spare output 14/10
H4	GPO 12 - DBW+

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

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

Adapter ECU side connector X6000

Pin number	Function	Information
X6001-1	SWITCHED 12V	USED
X6001-2	SWITCHED 12V	USED
X6001-3	SWITCHED 12V	USED
X6001-4	SWITCHED 12V	USED
X6001-5	SWITCHED 12V	SPARE FROM MAIN RELAY
X6001-6	POWER GROUND	USED
X6001-7	POWER GROUND	USED
X6001-8	POWER GROUND	USED
X6001-9	POWER GROUND	SPARE
X6002-13	IGNITION 1
X6002-14	IGNITION 2
X6002-15	IGNITION 3
X6002-16	IGNITION 4
X6002-17	IGNITION 5
X6002-18	IGNITION 6
X6003-1	COOLANT TEMP SENSOR
X6003-2	AIR TEMP SENSOR
X6003-3	TPS1
X6003-4	TPS2
X6003-5	PPS1
X6003-6	PPS2
X6003-7	CRANK +
X6003-8	CRANK -
X6003-10	LP FP SIGNAL
X6003-12	CAN High	FROM ECU
X6003-13	CAN High	Spare CANBUS connection
X6003-14	CAM SYNC	INTAKE CAM
X6003-16	EXHAUST VANOS SIGNAL
X6003-18	RADIATOR OUTLET TEMP SIGNAL
X6003-19	WBO2 PIN 1
X6003-20	WBO2 PIN 2
X6003-21	WBO2 PIN 3
X6003-22	WBO2 PIN 5
X6003-23	WBO2 PIN 6
X6003-24	EOP SWITCH
X6003-25	CAN Low	FROM ECU
X6003-26	CAN Low	Spare CANBUS connection
X6003-27	BOOST Signal
X6003-28	KNOCK 1	CYLINDERS 1-3
X6003-29	KNOCK 2	CYLINDERS 4-6
X6003-32	WBO2 PIN 1
X6003-33	WBO2 PIN 2
X6003-34	WBO2 PIN 3
X6003-35	WBO2 PIN 5
X6003-36	WBO2 PIN 6
X6003-40	VSS
X6003-41	BRAKE SWITCH	Available but not used
X6003-42	CLUTCH SWITCH
X6003-43	KNOCK GROUND
X6003-45	BSD GPO
X6003-46	BSD DIN
X6003-49	POST THROTTLE PRESSURE
X6004-1	INTAKE VANOS SOLENOID
X6004-6	EXHAUST VANOS SOLENOID
X6004-9	ELECTRIC THERMOSTAT
X6004-10	ELECTRIC FAN PWM
X6004-11	DBW+
X6004-13	TACHO
X6004-14	WG FRONT
X6004-15	WG REAR
X6004-21	DBW-
X6004-23	EXHAUST FLAP	Available but not used
X6004-24	EVAP	Available but not used
X6004-27	5V SUPPLY	FROM ECU
X6004-28	5V SUPPLY	TO AUX 8/7
X6004-29	5V SUPPLY	Spare 5v
X6004-30	5V SUPPLY	Spare 5v
X6004-35	E BOX FAN	Available but not used
X6004-37	ANALOG GROUND	ECU E3
X6004-38	ANALOG GROUND	ECU H1
X6004-39	ANALOG GROUND	TO AUX 8/8
X6004-40	ANALOG GROUND	TO AUX 18/18
X6005-1	12V SWITCHED	FROM MAIN RELAY
X6005-2	12V SWITCHED	FROM MAIN RELAY
X6005-3	N/A
X6003-4	PWR GND
X6003-5	CAN HIGH	Spare CANBUS connection
X6003-6	CAN HIGH	Spare CANBUS connection
X6003-7	PWR GND
X6003-8	CAN LOW	Spare CANBUS connection
X6003-9	CAN LOW	Spare CANBUS connection

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Last change 08.04.2024, 08:52:47