BMW N52 Race PNPECU Wiki V5
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PNPECU MaxxECU N52 solution
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
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
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
• 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
• 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
• 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
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
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
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
|
Last change 28.04.2024, 14:06:03