View source for BMW N54 PNPECU Wiki

== PNPECU MaxxECU N54 solution == 

This page refers to version 3 PNPECU N54 solution only. Make sure to check the adapter tag for your version.
 
5/11/2022 - Version 3 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

== Adaper 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. 

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 ==

* 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 ==

* 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 ==

* 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 == 

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
*IGBT Output box - Stock coils can be retained
*VAG R8 coils and connectors - PNPECU supplied R8 coils, customer will install the coils into the original coil wiring or add their own wiring

ECU Model
* Race - All EGT inputs are spare, 2 Analog inputs are spare, 1 Digital input is spare, 3 Low side outputs are 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 == 

Below is the pin functions of the N54 V3 adapter. The ignition option dictates if the Molex connector is in the adapter or not.


{| class="wikitable" style="margin:auto"
|+ 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 || 
|-
| 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 - VANOS Intake output ||
|-
| D1 || WBO2 Heater Front output || 
|-
| D2 || IGN 7 - Spare 0/5v output || 
|-
| D3 || IGN 8 - Spare 0/5v output || 
|-
| D4 || GPO 3 - VANOS Exhaust output || 
|-
| E1 || CAN High || 
|-
| E2 || CAN Low || 
|-
| E3 || GND Shield || 
|-
| E4 || GPO 4 - Electric thermostat output || 
|-
| 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 || 
|-
| J2 || AIN 2 - Spare Temp input || 
|-
| 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 || 
|-
| L2 || INJ 7 - Wastegate front bank || 
|-
| L3 || INJ 6 || 
|-
| L4 || Power GND || 
|-
| M1 || INJ 3 || 
|-
| M2 || INJ 4 || 
|-
| M3 || INJ 5 || 
|-
| M4 || 12V || From X2-1

|}



{| class="wikitable" style="margin:auto"
|+ 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 - LP Fuel Pressure input || 
|-
| F2 || AIN 8 - TPS2 || 
|-
| F3 || DIN/VR 4 - VSS || 
|-
| F4 || DIN/VR 5 - Spare input || 
|-
| G1 || GPO 15 - Spare output || 
|-
| G2 || GPO 16 - Spare output || 
|-
| G3 || AIN 5 - BOOST || 
|-
| G4 || Power GND || 
|-
| H1 || GPO 14 - Spare output || 
|-
| H2 || GPO 11 - DBW- || 
|-
| H3 || GPO 13 - Spare output || 
|-
| H4 || GPO 12 - DBW+ || 


|}


{| class="wikitable" style="margin:auto"
|+ 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


|}

{| class="wikitable" style="margin:auto"
|+ Injector loom connector - 14pin with 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 || Low side output
|-
| 14 || IGN 8 || Low side output


|}


{| class="wikitable" style="margin:auto"
|+ 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 || 
|


|}

{| class="wikitable" style="margin:auto"
|+ Ignition box connector - 20pin
|-
! Pin number !! Function !! Information
|-
| 1 || IGN 1 FROM ECU || 
|-
| 2 || IGN 2 FROM ECU || 
|-
| 3 || IGN 3 FROM ECU || 
|-
| 4 || IGN 4 FROM ECU || 
|-
| 5 || IGN 5 FROM ECU || 
|-
| 6 || IGN 6 FROM ECU || 
|-
| 7 || IGN 7 FROM ECU || 
|-
| 8 || IGN 8 FROM ECU || 
|-
| 9 || POWER GROUND || 
|-
| 10 || 12+ || 
|-
| 11 || IGNITION COIL 1 || 
|-
| 12 || IGNITION COIL 2 || 
|-
| 13 || IGNITION COIL 3 || 
|-
| 14 || IGNITION COIL 4 || 
|-
| 15 || IGNITION COIL 5 || 
|-
| 16 || IGNITION COIL 6 || 
|-
| 17 || SPARE lOW SIDE OUTPUT || IGN7 SIGNAL FROM ECU CONTROLLED
|-
| 18 || SPARE lOW SIDE OUTPUT || IGN8 SIGNAL FROM ECU CONTROLLED
|-
| 18 || POWER GROUND || 
|-
| 20 || POWER GROUND || 



|}



{| class="wikitable" style="margin:auto"
|+ PNPECU Injector loom pinout without ignition box- 14pin
|-
! 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 || SPARE 12V
|-
| 9 || GPO 6 || SPARE LOW SIDE OUTPUT
|-
| 10 || GPO 13 || SPARE LOW SIDE OUTPUT
|-
| 11 || GPO 15 || SPARE HIGH SIDE OUTPUT
|-
| 12 || GPO 16 || SPARE HIGH SIDE OUTPUT
|-
| 13 || IGN 7 || SPARE 0/5v OUTPUT
|-
| 14 || IGN 8 || SPARE 0/5v OUTPUT


|}