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Reproduction in whole or in part is prohibited without written approval from MoTeC Pty Ltd.

SCREWDRIVER ECU

WIRING CONNECTIONS

Red 12V ( + ) direct from battery }

} paired together

Black 12V ( -- ) direct to battery }

Blue injector supply }

} paired together

Black injector earth }

Brown 12V + supply to one high pressure fuel pump

Purple 12V + supply from ignition switch

White ignition contact breaker

Black }

} Sheathed with two pin plug for intake air temperature sensor

White }

Summary of content (5 pages)

PAGE 1
SCREWDRIVER ECU WIRING CONNECTIONS Red 12V ( + ) direct from battery } } paired together Black 12V ( -- ) direct to battery Blue } injector supply } } paired together Black injector earth } Brown 12V + supply to one high pressure fuel pump Purple 12V + supply from ignition switch White ignition contact breaker Black } } Sheathed with two pin plug for intake air temperature sensor White } © Copyright – MoTeC Pty Ltd Reproduction in whole or in part is prohibited without written approval from MoTeC Pt
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SETTING UP THE MOTEC E.C.U. CYLINDER SELECTION Switches 1 and 2 can be arranged by the user to give settings for 4, 6, 8 and 12 cylinder setting by following the coding arrangement on the facie board. Be careful to follow the printed lines from the code panel to the switches. Rotary engines and twin ignition V8 engines require 4 cylinder settings (see section- THINGS TO BE AWARE OF). INJECTION TIME RANGE SWITCHES Switches 3, 4 and 5 give 8 combinations of injection maximum on times varying from 4.5 ms.
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is not under pressure other than the residual tank return line pressure drop, but welding must be checked for leaks. 2. Use either vehicles low pressure standard pump to lift from fuel tank via water separator/fuel filter to header tank into one of the bottom connections. 3. Draw off from other bottom connection to high pressure pump and then to engine fuel rail. 4. The fuel rail carries fuel to the injectors and is pressurised by the fuel regulator to 45-50 PSI.
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lightly modified engine for maximum fuel economy a figure of 4% is O.K. One problem often encountered is that, while the gas analyser is adjusted for zero and span, it may not have been calibrated with span gas of a known CO percentage for some time. We have found a number of analysers with errors greater than 2% C0, which is enough to give seriously defective information which you are using to tune your mega dollar engine.
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TURBO OR SUPERCHARGED ENGINES The vacuum line (now a pressure line when on boost) should be placed so that it will read what the engine sees under all conditions. If a Plenum system is used a tapping into it is O.K. If multiple runners with butterflies in each runner is used the tapping must be on the engine side of the butterflies. The set up is carried out exactly the same way as for a naturally aspirated engine, but giving only enough throttle to avoid the boost mix light from coming on.