BMW N52 Race PNPECU Wiki V5

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PNPECU MaxxECU N52 solution

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This page refers to version 5 PNPECU N52 solution only. Make sure to check the adapter tag for your version.

1/7/2023 - Version 5 is latest.

PNPECU has developed the N52 solution to satisfy customer requests to allow the N52 engine to be operated fully.
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 EKPM2/3 is also controlled by the MaxxECU

Adapter extra connector information

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See bottom of this page for the pinouts of these auxiliary connectors.

• 18 pin Auxiliary connector part numbers
  • Connector - https://www.te.com/usa-en/product-1-962692-2.html
  • Terminals - https://www.te.com/usa-en/product-5-963716-1.html

X6000-1 and X6000-5 terminals for spare functions (12V, GROUND, CANBUS HUB)

X6001 IS THE BLACK CONNECTOR

X6005 IS THE WHITE CONNECTOR


  • Terminals - https://www.te.com/usa-en/product-964284-2.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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• Valvetronic cannot be controlled by the ECU and so other means of control must be utilized or the valvetronic eccentric shaft must be fixed in place to provide maximum lift.

N52 OEM Sensors Usage

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• Pre throttle pressure sensor is not required but has been connected 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
• Rear LSU Lambda sensor is not used by the Race ECU, but the pins are available in the X6003 connector to an external wideband controller and then wiring to the ECU.
• Brake switch - not wired but is available, also available on canbus

• Knock sensors - used as OEM
• Air temperature - used as OEM
• 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
• 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 - used as OEM
• Radiator outlet temperature sensor - used as OEM

N52 OEM Actuator Usage

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• Valvetronic motor - not available

• Ignition coil wiring - see options below for more details
• DISA Valves
• Tachometer signal
• Electric Fan PWM control
• Vanos Intake and Exhaust
• Wideband sensor heater for front sensor
• Electric thermostat
• Electronic throttle
• Fuel pump control via canbus
• EVAP solenoid
• Alternator via BSD
• Waterpump via BSD
• Exhaust flap - used as OEM
• AC Compressor relay

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 - Adapter housing provides ignition drivers.

ECU Model
• Race - All EGT inputs are spare, 2 Analog inputs are spare, 1 Digital input is spare, 1 Low side outputs are spare, 2 High side outputs are spare, 2 Hbridge outputs are 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

Race adapter pinout information

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Below is the pin functions of the N52 V5 adapter.

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	Exhaust flap control
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	Spare output 18/7
D1	WBO2 Heater Front output
D2	IGN 7	DISA I Valve
D3	IGN 8	DISA II Valve
D4	GPO 3	Electric Thermostat
E1	CAN High
E2	CAN Low
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	Intake cam sensor
J1	AIN 1	Spare output 18/14
J2	AIN 2	Radiator Outlet Temperature
J3	AIN 3	Throttle Position 2
J4	AIN 4	Pedal Position 2
K1	INJ 1
K2	INJ 2
K3	DIN/VR 1	Exhaust cam signal
K4	DIN/VR 2	Clutch switch
L1	INJ 8	Exhaust Vanos Solenoid
L2	INJ 7	Intake Vanos Solenoid
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	Low Pressure Fuel Pressure signal
F1	AIN 7	Pre Throttle Pressure signal
F2	AIN 8	Spare input 18/15
F3	DIN/VR 4	VSS
F4	DIN/VR 5	Spare input 18/12
G1	GPO 15	Spare output 18/10
G2	GPO 16	Spare output 18/11
G3	AIN 5	Pedal Position 1
G4	Power GND
H1	GPO 14	Spare output 18/9
H2	GPO 11	DBW-
H3	GPO 13	Spare output 18/8
H4	GPO 12	DBW+

Auxiliary connector - 18pin

Pin number	Function	Information
1	12V SUPPLY
2	5V SUPPLY
3	ANALOG GROUND
4	POWER GROUND
5	CAN HIGH
6	CAN LOW
7	GPO 2
8	GPO 13
9	GPO 14
10	GPO 15
11	GPO 16
12	DIN 5
13	12V SUPPLY
14	AIN 1
15	AIN 8
16	5V SUPPLY
17	5V SUPPLY
18	ANALOG GROUND

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	SPARE FROM MAIN RELAY
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
X6002-1	INJECTOR 1
X6002-2	INJECTOR 2
X6002-3	INJECTOR 3
X6002-4	INJECTOR 4
X6002-5	INJECTOR 5
X6002-6	INJECTOR 6
X6002-13	IGNITION 1
X6002-14	IGNITION 2
X6002-15	IGNITION 3
X6002-16	IGNITION 4
X6002-17	IGNITION 5
X6002-18	IGNITION 6
X6002-19	IGNITION 7	DISA I VALVE
X6002-19	IGNITION 8	DISA II VALVE
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	LOW PRESSURE FUEL PRESSURE
X6003-12	CAN High	FROM ECU
X6003-13	CAN High	Spare CANBUS connection
X6003-14	CAM SYNC	INTAKE CAM
X6003-16	EXHAUST VANOS
X6003-18	RADIATOR OUTLET TEMP
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	Available but not wired
X6003-25	CAN Low	FROM ECU
X6003-26	CAN Low	Spare CANBUS connection
X6003-27	MAF Signal	Available but not wired
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 wired
X6003-42	CLUTCH SWITCH
X6003-43	KNOCK GROUND
X6003-45	BSD GPO
X6003-46	BSD DIN
X6003-49	PRE-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
X6004-21	DBW-
X6004-22	EXHAUST FLAP
X6004-24	EVAP
X6004-27	5V SUPPLY	FROM ECU
X6004-28	5V SUPPLY	TO AUX 18/2
X6004-29	5V SUPPLY	TO AUX 18/16
X6004-30	5V SUPPLY	TO AUX 18/17
X6004-35	E BOX FAN	Available but not wired
X6004-36	ENGINE BREATHER HEATER RELAY	Available but not wired
X6004-37	ANALOG GROUND	ECU E3
X6004-38	ANALOG GROUND	ECU H1
X6004-39	ANALOG GROUND	TO AUX 18/3
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 28.04.2024, 14:06:03