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Last change 25.04.2024, 18:19:17

BMW M52 MaxxECU Race PNPECU Wiki V4

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Contents

  1. PNPECU MaxxECU M52 MS41 solution
  2. Adapter extra connector information
  3. Transmission compatibility
  4. M52 OEM Sensors Usage
  5. M52 OEM Actuator Usage
  6. CAN BUS Compatibility
  7. Options at ordering
  8. Race adapter pinout information

PNPECU MaxxECU M52 MS41 solution



This page refers to version 4 PNPECU M52 solution only. Make sure to check the adapter tag for your version.
This is not compatible with 320i Siemens ECUs which have different wiring, please contact us if you want such an adapter.

02/09/2023 - Version 4 is latest.

PNPECU has developed the M52 solution to satisfy customer requests to allow the M52 engine to be fully controlled


Adapter extra connector information



• 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



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



• MAF is not used
• Lambda sensors are not used
• Air temp sensor is not used - new fast sensor is supplied
• Camshaft sensor is not compatible - recommended is to fit a M54 sensor - not crucial for normal operation, vanos still works.


• 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


M52 OEM Actuator Usage



• Ignition coil wiring - see options below for more details
• Tachometer signal
• Fuel pump relay
• Idle control valve
• Vanos advance
• Check engine indicator
• AC Compressor relay
• Fuel consumption output


CAN BUS Compatibility



The E36/E34/E38 the M52 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 M52 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 - IGBT box is set to smart coils - Customer will rewire smart coils into standard ignition wiring
• Stock coils can be retained - IGBT box is set to dump coils

ECU Model
• Race - All EGT inputs are spare, 8 Analog inputs are spare, 1 Digital input is spare, 3 Low side outputs are spare, 1 High side output is spare, 2 Logic level outputs are available, 2 H-bridges are available


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 V3 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 IAC CLOSE
A2 IGN 1
A3 IGN 2
A4 GPO 8 / Tacho output
B1 GPO 6 VANOS
B2 IGN 3
B3 IGN 4
B4 GPO 1 FUEL PUMP RELAY
C1 GPO 7 Spare output
C2 IGN 5
C3 IGN 6
C4 GPO 2 Spare output
D1 WBO2 Heater
D2 IGN 7 Spare output 0/5v
D3 IGN 8 Spare output 0/5v
D4 GPO 3 IAC OPEN
E1 CAN High Spare
E2 CAN Low Spare
E3 GND Shield
E4 GPO 4 AC CLUTCH RELAY
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
J2 AIN 2 Spare input
J3 AIN 3 Spare input
J4 AIN 4 Spare input
K1 INJ 1
K2 INJ 2
K3 DIN/VR 1 Spare Digital input
K4 DIN/VR 2 VSS
L1 INJ 8 Spare output
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 Spare input
F1 AIN 7 Spare input
F2 AIN 8 Spare input
F3 DIN/VR 4 AC REQUEST
F4 DIN/VR 5 AC PRESSURE SWITCH
G1 GPO 15 FUEL CONSUMPTION OUTPUT
G2 GPO 16 Spare output
G3 AIN 5 Spare input
G4 Power GND
H1 GPO 14 Spare output
H2 GPO 11 Spare output
H3 GPO 13 Spare output
H4 GPO 12 Spare output



Auxiliary connector - 14pin without ignition Box
Pin number Function Information
1 12V SUPPLY
2 5V SUPPLY
3 POWER GROUND
4 ANALOG GROUND
5 CAN HIGH
6 CAN LOW
7 DIN 1
8 ANALOG IN 1
9 ANALOG IN 2
10 ANALOG IN 3
11 ANALOG IN 4
12 GPO 7
13 GPO 2
14 INJ8




Auxiliary connector - 8pin
Pin number Function Information
1 DBW+ GPO 11
2 DBW- GPO 12
3 ANALAOG IN 5
4 ANALAOG IN 6
5 ANALAOG IN 7
6 ANALAOG IN 8
7 5V
8 ANALOG GROUND



Last change 08.04.2024, 08:52:39




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