BMW M52 MaxxECU Race PNPECU Wiki V4.9
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PNPECU MaxxECU M52 MS41 solution
This page refers to version 4.9 PNPECU M50 VANOS solution only. Make sure to check the adapter tag for your version.
9/3/2024 - Version 4.9 is latest.
PNPECU has developed the M52 solution to satisfy customer requests to allow the M50 engine to be fully controlled
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-1355348-1.html
• Cover -
https://www.te.com/usa-en/product-1-1355350-1.html
• Terminals -
https://www.te.com/usa-en/product-5-963716-1.html
• 14 pin Auxiliary 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
X6000-1 and X6000-5 terminals for spare functions (12V, GROUND, CANBUS HUB)
• 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.
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!
M52 OEM Sensors Usage
• Air temp sensor is not used - new fast sensor is supplied through stock wiring in PNPECU ECU kits not adapters - fit BMW 13622243946 (M12 threads) to have a fast-acting sensor in the intake, otherwise fit an extension to the air temp sensor and fit the new sensor in the intercooler piping.
• MAF is wired - loggable
• Camshaft signal - 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
• AC Compressor Enable - used as OEM
• AC Compressor Activate - used as OEM
M52 OEM Actuator Usage
• Ignition coil wiring
• Tachometer signal
• Fuel pump relay
• Idle control valve
• Vanos advance
• Check engine indicator
• AC Compressor relay
• Fuel consumption output
• EVAP Solenoid
CAN BUS Compatibility
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
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, 6 Analog inputs are spare, 1 Digital inputs are spare, 2 Low side output is spare, 1 High side output is spare, 2 full H-bridges are available for DBW and other things.
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
Below is the pin functions of the M52 V4.9 adapter.
Race Connector 1 - 48pin
Pin number |
Function |
Information
|
A1 |
GPO 5 |
IAC CLOSE
|
A2 |
IGN 1 |
|
A3 |
IGN 2 |
|
A4 |
GPO 8 |
TACHO
|
B1 |
GPO 6 |
VANOS SOLENOID
|
B2 |
IGN 3 |
|
B3 |
IGN 4 |
|
B4 |
GPO 1 |
FUEL PUMP RELAY
|
C1 |
GPO 7 |
Spare output AUX 18/7
|
C2 |
IGN 5 |
|
C3 |
IGN 6 |
|
C4 |
GPO 2 |
Spare output AUX 18/10
|
D1 |
WBO2 Heater |
|
D2 |
IGN 7 |
AC COMPRESSOR RELAY
|
D3 |
IGN 8 |
EXHAUST FLAP
|
D4 |
GPO 3 |
IAC OPEN
|
E1 |
CAN High |
Spare AUX 18/5 AND 14/5
|
E2 |
CAN Low |
Spare AUX 18/6 AND 14/6
|
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 |
|
J1 |
AIN 1 |
Spare input 14/7
|
J2 |
AIN 2 |
Spare input 14/8
|
J3 |
AIN 3 |
Spare input AUX 18/12
|
J4 |
AIN 4 |
Spare input AUX 18/13
|
K1 |
INJ 1 |
|
K2 |
INJ 2 |
|
K3 |
DIN/VR 1 |
Spare input 18/18
|
K4 |
DIN/VR 2 |
VSS
|
L1 |
INJ 8 |
Spare output 14/11
|
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 |
FUEL TANK PRESSURE
|
F1 |
AIN 7 |
Spare input AUX 14/9
|
F2 |
AIN 8 |
Spare input AUX 14/10
|
F3 |
DIN/VR 4 |
AC REQUEST
|
F4 |
DIN/VR 5 |
AC PRESSURE SWITCH
|
G1 |
GPO 15 |
ECONOMETER
|
G2 |
GPO 16 |
Spare output AUX 14/11
|
G3 |
AIN 5 |
MAF SIGNAL
|
G4 |
Power GND |
|
H1 |
GPO 14 |
Spare output AUX 18/9
|
H2 |
GPO 11 |
Spare output AUX 18/15
|
H3 |
GPO 13 |
Spare output AUX 18/8
|
H4 |
GPO 12 |
Spare output AUX 18/14
|
Auxiliary connector - 14pin
Pin number |
Function |
Information
|
1 |
12V SUPPLY |
|
2 |
5V SUPPLY |
|
3 |
ANALOG GROUND |
|
4 |
POWER GROUND |
|
5 |
CAN HIGH |
|
6 |
CAN LOW |
|
7 |
AIN 1 |
|
8 |
AIN 2 |
|
9 |
AIN 7 |
|
10 |
AIN 8 |
|
11 |
INJECTOR 8 |
|
12 |
ANALOG GROUND |
|
13 |
EMPTY |
|
14 |
EMPTY |
|
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 7 |
|
8 |
GPO 13 |
|
9 |
GPO 14 |
|
10 |
GPO 2 |
|
11 |
GPO 16 |
|
12 |
AIN 3 |
|
13 |
AIN 4 |
|
14 |
DBW+ / GPO 12 |
|
15 |
DBW- / GPO 11 |
|
16 |
5V SUPPLY |
|
17 |
ANALOG GROUND |
|
18 |
DIN 1 |
|
Adapter ECU side connector X6000
Pin number |
Function |
Information
|
X6001-1 |
SWITCHED 12V |
|
X6001-2 |
SWITCHED 12V |
|
X6001-3 |
SWITCHED 12V |
|
X6001-4 |
SWITCHED 12V |
SPARE FROM MAIN RELAY
|
X6001-5 |
SWITCHED 12V |
SPARE FROM MAIN RELAY
|
X6001-6 |
POWER GROUND |
|
X6001-7 |
POWER GROUND |
|
X6001-8 |
POWER GROUND |
|
X6001-9 |
POWER GROUND |
|
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 |
|
X6003-1 |
COOLANT TEMP SENSOR |
|
X6003-2 |
AIR TEMP SENSOR |
|
X6003-3 |
TPS |
|
X6003-7 |
CRANK + |
|
X6003-8 |
CRANK - |
|
X6003-12 |
CAN High |
FROM ECU
|
X6003-13 |
CAN High |
Spare CANBUS connection
|
X6003-14 |
CAM SYNC |
|
X6003-25 |
CAN Low |
FROM ECU
|
X6003-26 |
CAN Low |
Spare CANBUS connection
|
X6003-27 |
MAF Signal |
|
X6003-28 |
KNOCK 1 |
CYLINDERS 1-3
|
X6003-29 |
KNOCK 2 |
CYLINDERS 4-6
|
X6003-40 |
VSS |
|
X6003-43 |
KNOCK GROUND |
|
X6003-50 |
AC ENABLE |
|
X6003-51 |
AC PRESSURE |
|
X6004-1 |
VANOS SOLENOID |
|
X6004-12 |
ICV OPEN |
|
X6004-13 |
TACHO |
|
X6004-17 |
CHECK ENGINE LIGHT |
|
X6004-18 |
ECONOMY GAUGE |
|
X6004-22 |
ICV CLOSE |
|
X6004-24 |
EVAP |
|
X6004-25 |
FUEL PUMP RELAY |
|
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 14/2
|
X6004-37 |
ANALOG GROUND |
TO AUX 14/12
|
X6004-38 |
ANALOG GROUND |
ECU H1
|
X6004-39 |
ANALOG GROUND |
TO AUX 18/3
|
X6004-40 |
ANALOG GROUND |
TO AUX 18/17
|
X6005-1 |
12V SWITCHED |
FROM MAIN RELAY
|
X6005-2 |
12V SWITCHED |
FROM MAIN RELAY
|
X6005-3 |
N/A |
|
X6005-4 |
PWR GND |
|
X6005-5 |
CAN HIGH |
Spare CANBUS connection
|
X6005-6 |
CAN HIGH |
Spare CANBUS connection
|
X6005-7 |
PWR GND |
|
X6005-8 |
CAN LOW |
Spare CANBUS connection
|
X6005-9 |
CAN LOW |
Spare CANBUS connection
|
Last change 24.06.2024, 22:36:12