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MaxxECU online help

The MaxxECU RACE adapter for the MS42/MS43 BMW's can only be used with MaxxECU RACE.

 

Vehicle cover list

Vehicle

Engines

Year

LSU sensor

Note

BMW 3-series (E46)

2.0, 2.3, 2.5, 2.8, 3.0, 3.2L (M54)

2000 - 2006

External sensor needed (included)

Verified!

BMW 5-series (E39)

2.0, 2.3, 2.5, 2.8, 3.0, 3.2L (M54)

2000 - 2004

External sensor needed (included)

Not verified yet!

BMW 7-series (E65/E66)

3.0L (M54)

2002 - 2005

External sensor needed (included)

Not verified yet!

BMW X5 (E53)

3.0L (M54)

2000 - 2006

External sensor needed (included)

Not verified yet!

BMW Z3 (E36/E37)

2.0, 2.2, 2.5, 2.8L (M54)

2000 - 2002

External sensor needed (included)

Not verified yet!

BMW Z4 (E85)

2.2, 2.5, 3.0 (M54)

2002 - 2005

External sensor needed (included)

Not verified yet!

Note: Manual transmission only!

 

 

Control options

Options

OEM ECU PIN

MaxxECU IO

MaxxECU RACE

Note

6 injection sequential

 

INJ 1-8

YES

 

6 ignition sequential (using external IGBT modules)

 

IGN 1-8

YES

 

E-Throttle with cruise control

 

GPO 11/GPO 12

Yes

 

Idle solenoid*

C46, C47

GPO 5, GPO 6

Yes

Not used for idle features using our base tune, but it is still wired...

DISA (intake)

C49

GPO 8

Yes

 

Exhaust flap*

D18

 

Yes

Only available on M54B30, this output is always active (no control option available)

FAN (PWM)

D4

GPO 1

Yes

 

AC magnetic clutch*

D29

GPO 7

YES

Parallel wired to GT1508:C (can be used as an output for anything if you disconnect it from the AC)

Fuel pump

D10

GPO 2

YES

 

Thermostat

C45

GPO 3

YES

 

Fuel tank vent valve

C42

GPO 4

Yes

 

Crank trigger

C8

TRIGGER

YES

 

Intake CAM trigger

C5

HOME

YES

 

Exhaust CAM trigger

C2

DIN 1

YES

 

Engine oil temp

C27

AIN 1

YES

 

Intake air temperature sensor (IAT)

C22

IAT

YES

 

Coolant outlet temperature

AIN 2

-

Yes

No calibration available for this sensor.

VANOS solenoid (intake)

C40

INJ 7

YES

 

VANOS solenoid (exhaust)

C41

INJ 8

YES

 

Clutch switch

D23

DIN 2

YES

 

Boost solenoid

 

GPO 15 (+12V)

Yes

 

Brake switch

 

BMW E46 330i (MS 43) CAN

Yes

 

Secondary air pump

-

-

NO

 

Wideband lambda sensor

 

 

YES

Using external harness (included)

OEM mass air mass sensor

-

-

NO

 

OEM knock sensors

C29, C31

KNOCK1, KNOCK2

YES

 

E-Throttle/pedal sensors

C19, C10, D8, D13

TPS, AIN 3,4,5

 

 

Intrument cluster

 

BMW E46 330i (MS 43) CAN

Yes


Bluetooth (MDash)

 

 

Yes

 

EGT option

 

 

Yes, 6 Directly

 

 

 

 

Plugin adapter description

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1

MaxxECU RACE CMC connector 1

2

MaxxECU RACE CMC connector 2

3

Vehicle harness adapter

4

Main DME relay

5

MaxxECU built-in EGT (1-6) mini-k connectors

6

2-pin extra connector for boost control solenoid (or any other extra output feature)

7

8-pin DTM connector (for external WBO). Cable and sensor included

8

8-pin extra connector for extra sensors and other features

9

3-pin DTM connectors for external the included IGBT modules

10

Extra 4-pin connector (CAN)

 

 

4-pin connector (superseal)

Pin

Description

Usage

Note

1

+12V

+12 power supply

 

2

CAN H


 

3

CAN L

 

 

4

Engine GND

 

 

 

 

 

8-pin extra connector (GT150)

Note: Pinout is from the wire side of the pre-wired cable harness.

 

Pin

Description

Usage

Note

A

+5V sensor supply

Power source for external sensors

 

B

Sensor GND

Sensor ground for external sensors

MUST NOT BE CONNECTED TO CHASSIE GND

C

GPO 7 / DIN 3

Output or digital input

Parallel wired to OEM AC MAGNETIC CLUTCH (D29), disconnect from AC to use as another output function

D

AIN 7

0-5V analog input

 

E

DIN/VR 5

digital input

 

F

AIN 8

0-5V analog input

 

G

AIN 6

0-5V analog input

 

H

+12V switched

Battery positive (+12V)

Output at ignition on

 

 

 

ECU location and installation

 

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Stock ECU is located in engine bay on driver side.

 

 

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1. Remove plastic cover in engine bay.

 

 

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2. Remove all stock ECU/DME connectors and put them aside.

 

 

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3. Reconnect one of the ECU connectors in the middle, gently bend the locking clips (red arrows) outwards and pull the harness and ECU upwards.

 

 

When the stock ECU is removed, you have to consider how you will mount your MaxxECU unit and adapter to suit your need. From here on, we give you one example installation.

 

 

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Best intention is to mount the MaxxECU in the stock ECU location, by either cut into the stock plastic holder or remove it completely, the decision is yours to make.

 

 

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4. Try to lift up the plastic holder, in the bottom there is some locking clips you need to release before you can remove it complete, and also some zip ties which must be removed.

 

 

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5. The ECU plastic holder unmounted.

 

 

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6. Route the included MAP sensor hose from the intake to the MaxxECU.

 

 

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7. Mount the included Bluetooth antenna (make sure the actual MaxxECU CMC connectors is mounted before the antenna).

 

 

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8. Mount the MaxxECU, use some adhesive tape or similar to make it stick. Mount the 6 included ignition modules (IGBT) into the 3-pin DTM connectors.

 

 

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9. Install the included wideband lambda sensor into the exhaust, route the included WBO cable to the adapter harness and connect.

Install the USB cable and route it inside the vehicle. Connect the vehicle harness ECU connectors to the MaxxECU adapter harness connectors.

 

 

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10. Wire in some extra sensors/outputs in the 8-pin extra connector, and also for boosted application you can use the extra 2-pin superseal connector to a boost solenoid.

 

 

Note: The IGBT modules needs to be mounted on a aluminium surface to distribute heat (depending on power output).

 

 

 

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11. Before mounting back the plastic cover, you need to cut into the rubber bushing at arrow location to make the extra wired to fit, make sure no water can enter since the MaxxECU unit is not waterproofed.

 

 

 

See also

Product page

Example wirings of extra input and output

Download base maps

Trigger problems

Engine start