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MaxxECU online help

Note: This is the updated plugin adapter to fit MaxxECU STREET, RACE and PRO.

For information on the first generation MaxxECU V1 adapters, downloaded here.

 

 

Vehicle cover list

Vehicle

Engine code

Year

LSU sensor

Note

Audi S2

3B

1991 - 1992

External sensor needed

 

 

 

Control options

The MaxxECU adapter for Audi S2 with Audi 5-cyl engine (3B) can be used with all our ECUs

 

OEM options

MaxxECU IO

STREET

V1/RACE/PRO

Fuel pump

GPO 1

Yes

Yes

Tachometer

GPO 8

Yes

Yes

Idle solenoid

INJ 6

Yes

Yes

Engine fan

Vehicle control

Yes

Yes

Boost solenoid

GPO 2

Yes

Yes

Vehicle speed

-

No

No

AC

-

No

No

AC request

-

No

No

Bluetooth (MDash)

-

No

Yes

Knock sensor(s)

-

No

No

EGT option

-

Yes, external

Yes, direct

 

Note: This plugin adapter uses only connector 1 on MaxxECU RACE/PRO units, for extra functionality, the second harness can be added to the RACE ECU.

The PRO ECU have in total of four ECU connectors which could be added for extra functionality: second harness, third harness and/or harness 4.

 

 

Plugin adapter description

clip0231

1

MaxxECU CMC connector 1

2

Vehicle harness adapter

3

16-pin extra connector

4

3-pin extra connector for ex. pressure sensor, analog input 4 (AIN 4)

5

6-pin extra connector for coil-on-plug conversion with Audi 1.8T coils

 

 

ECU location and installation

Stock ECU is located behind plastic guard on passenger side floor.

 

1.Remove the plastic guard where the ECU is located.

2.Disconnect battery from vehicle.

3.Remove and disconnect stock ECU from vehicle harness.

4.Install MaxxECU adapter harness.

5.Route the included MaxxECU MAP-sensor hose to the intake manifold and connect into the MaxxECU.

6.Route wide band lambda cables to exhaust system, install lambda sensor in exhaust and wire the lambda sensor as instructed below.

 

16-pin extra connector

16-pin_connector

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

 

Pin

Description

Usage

Note

1

Wide band (VREF)

 


2

Wide band (VS)

 


3

Wide band (SHIELD)

 


4

Wide band (H-)

 

 

5

INJ 7

Output

Not available on MaxxECU STREET

6

INJ 8

Output

Not available on MaxxECU STREET

7

GPO 7/DIN 3

Output or digital input

Not available on MaxxECU STREET

8

GPO 4

Output

Not available on MaxxECU STREET

9

Wide band (IP)

 


10

Wide band (RCAL)

 


11

+12V

Output


12

+12V

Output


13

Engine GND

 


14

AIN 1

temperature input


15

AIN 2

temperature input


16

AIN 3

0-5V analog input


 

 

6-pin extra connector (VAG coil-on-plug conversion)

A

IGN 1 output

B

IGN 2 output

C

IGN 3 output

D

IGN 4 output

E

IGN 5 output

F

-

 

 

 

Internal wide band lambda (Bosch LSU 4.2) connection

clip0197

LSU 4.2 wiring with MaxxECU Plugin solutions.

Note: Seen from the wire side of the pre-wired connector.

 

PIN

Function (LSU 4.2)

1

VS

2

RCAL

3

+12V

4

H-

5

VREF

6

IP

 

See also external wide band lambda wiring.

 

 

See also

Product page

Example wirings of extra input and output

Download base maps

Audi 5-cyl trigger conversion

Trigger problems

Engine start

 

 

Last updated: 2017-03-26 by Natanael Ceder