KMS MD35 manual
Version 4.16 43
3.2.4.1.10 A.L.S.
A.L.S. (Anti Lag System): This feature can be used in
order to maintain boost pressure (only with turbocharged
engines) during “closed throttle” situations to eliminate
turbo lag. With the help of an electronic air-valve which
can make a bypass around the throttle body, the
turbocharger can keep on pumping air into the engine.
To prevent the engine from over-revving the ignition can
be retarded here at the different rpm levels. For cooling
of the engine extra fuel can be added. To limit the boost
pressure also a fixed PWM value can be set. The fuel
enrichment and PWM boost are both percentages.
If using variable A.L.S. by connecting a potentiometer
signal you can vary the PWM value from 0 to the value
set here in the A.L.S. settings. The potentiometer must
be in the range of 1 kΩ - 47 kΩ. The variable signal from
the potentiometer must be connected analog aux2 input
on pin 25 or analog aux3 input on pin 24. The 5V for the
potentiometer can be branched from the 5V sensor supply on pin 20. The remaining pin of the
potentiometer must be connected to the ground on pin 23.
When staged or banked injection is used, A.L.S. is not available.
Warning:
When using the A.L.S. be aware of extreme wear and shortage of lifespan of
the turbo, exhaust-valves, exhaust manifold etc.
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