Part No. GRN 128 - 967E  (with optional lambda control)

Please read these instructions in full before attempting to fit your new system.

Important Notes:

A.      This kit was originally programmed for the Corsa GSI for use on the RAC Rally using Super-unleaded fuel (98 Ron) it is recommend that you run a fuel of this grade as a minimum. If  only a lower grade of fuel is available in your country then running an octane booster must be used to bring the fuel up to the 98 RON. If this is not possible for any reason, then you will have to test your engine and modify the ignition map to suit the fuel you have to use. The use of a lower grade of fuel is likely to reduce the performance of your engine and if the ignition is not adjusted to suit, damage may occur to engine.

B.      If you wish to use Lambda control on your engine the standard sensor fitted to the Corsa engine is not suitable. It can be replaced with the production sensor as fitted to most Astra/Cavalier/Calibras (Bosch Part Number 0258 003 017). Or for a more accurate sensor we can supply a special motor sport sensor SBD part number LMBDA-11.

C.      The harness also has an extra socket for an air temperature sensor. This is an option and if there is no sensor present ECU has already been programmed run in a safe default mode. If you wish to run this option just order the sensor (SBD Part number AT1) and when the sensor is plugged in it will function automatically (the sensor must be placed in an area where it can read ambient temperatures away from the exhaust and radiator.

D.      If you intend on driving the car through areas where there are great altitude changes it is recommend you fit a barometric pressure sensor (Please contact SBD for more details).

Fitting & Set Up

1.       Remove old ECU from drivers kick panel & the standard engine / injection harness.

2.       Fit new ECU to car using velcro supplied.

3.       Lay new wiring harness across engine, to determine exact position of harness. Plug in TPS (throttle position sensor) and injectors (injector are fired group so there can be connected in any order this also means the cam sensor is not used) first (All connectors are labled).

4.       Connect the wire with a ring terminal marked +12VE to the positive terminal of the battery (IT MUST NOT UNDER ANY CONDITION BE PUT THROUGH A KILL SWITCH).

5.       Connect the wire with a ring terminal marked -12VE to a good earth on the chassis.

6.       The 4 Wires on the sure seal interface connector should be fitted as follows:

Purple – switched ignition

Orange – +12V to fuel pump

Green – Tacho

Blue/White – gear change light (switched negative signal from ECU)

7.       Connect all the other sensors.

8.       The last part of the harness to be connected should be the coil pack which is sited on the end of the cylinder head above the gearbox.

9.       Remove old idle control valve & replace with new manual one, supplied.

10.   Now plug in you computor with the MBE EASIMAP software running (You should spend time installing and familiarising yourself with this program before stating to fit the kit). Turn the ignition on and the View on you EASIMAP screen will read out the information being sent out from the ECU. The only setup to the ECU that may need an adjustment is the calibration of the throttle position sensor (This is because of the variation of the standard sensor from car to car) with the throttle completely closed the TPS SITE should read 0.0 and the voltage in TPS V = 1.18 (See Picture of View).

11.  If either the TPS or TPV do not read as specified, then you will have to modify the Throttle index map. The variation is usually only small (e.g. + or -0.3v max) make a note of the voltage displayed in the TPV box then upload the Throttle index map from the ECU.

12.   Once the Throttle index map has uploaded use the Control+A buttons to highlight the entire map. You can then add or subtract a number to fix the error in your cars standard throttle position sensor. .e.g. if the TPV reads 1.28 volts (1.18v Norm.) then the sensor is out by 0.10 volts and 0.10 volts must be added to the entire Map hold done the Shift key and hit the + then type in 0.10 and hit the Enter key.

13.   In order to make sure the cold running settings are correct, you will also need to modify the throttle pot thresholds. You must upload these from the ECU, there are 3 boxes that you must adjust. They will need to be changed by the same amount that you added or subtracted to the throttle index map itself. This means you have now modified all the appropriate areas within the ECU to suit your throttle pot sensor and you are now ready to start the engine.

14.   Start the engine, it may not idle correctly yet, and you will have to let the engine warm up to normal operating temperature. When engine is at correct temperature, adjust engine revs to. 980 rpm. This is  achieved by adjusting screw on modified idle control valve (fine tuning of this screw will also allow you to adjust the idle mixture)- DO NOT TOUCH THE BUTTERFLY SCREW UNDER ANY CIRCUMSTANCES. TAKE CARE AS ENGINE WILL BE HOT.

Please note that this kit is based on a racing management system. It does not have an automatic idle control valve, your engine may not idle immediatly from cold. For  the first couple of minutes  you may have to use the throttle pedal to maintain an idle but you may  drive your car as normal from start up.