Haltech E6K User Manual download pdf (Page 90)

Hot Min Position

Exactly the same as for when the engine is cold, except the value is used for when the

engine is hot, that is the temperature is above the Cold Temperature Limit.

Cold Opening position (%)

This is the opening position as a percentage of where the stepper motor will return to

when it is about to attempt to gain control of the engine. When you hit the throttle the

engine will accelerate and when it starts to decelerate again, there will come a point

during the deceleration when the Idle Control should attempt to regain control of the

engine and bring it to the target idle RPM. The value you set here will result in the

stepper motor assuming a certain position, say 40% out. It will wait here until the

decelerating engine comes within range and it feels it can take over control of the

engine and bring it back to idle. It will then assume control of the engine with the

valve open at 40%. This may be too high which will result in the engine momentarily

holding at the RPM produced by the valve at 40% opening. This means that it will

take a longer period of time to move the engine back down to target idle.

On the other hand, 40% may be too low and when the engine is decelerating, the Idle

Control will try to regain control at a point where the valve is going to cause the

engine to go very close to stalling. The secret is to start with a large value and reduce

it until it takes a normal amount of time for the idle control to regain control of the

decelerating engine and bring it back to target idle. A normal amount of time is a hazy

description but it is somewhere in the vicinity of not too small so as to go close to

stalling the engine and not too large as to take many seconds to return to target idle.

Hot Opening Position (%)

Exactly the same as for when the engine is cold, except the value is used for when the

engine is hot, that is the temperature is above the Cold Temperature Limit.

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Haltech E6K User Manual Page 90