LETRIPP II XMS4A DIY MANUAL V2.1 www.perfectpower.com 29
PERFECT POWER XMS4A – Engine Management System DIY MANUAL V2.1
17.1.3 IDLE RPM TARGET
Set realistic idle targets for the range of engine temperature. A cold engine prefers to idle
higher than a hot engine.
17.1.4 SHIFT/F11 – 2WIRE IDLE
To setup the two wire idle the following targets need to be programmed:
• Idle Minimum: This is the minimum idle PWM
• Idle Maximum: This is the maximum idle PWM
• Idle Kick Open %: This is the amount that the idle motor will “kick” open
• Idle Kick Window: This is the amount of RPM that if exceeded the “kick” is invoked
• Idle High Position: This is the idle PWM when the engine is returning to idle after being
revved
• 2 Wire Window: This is the amount of RPM above or below the target idle RPM that if
exceeded the idle circuit is activated
• 2 Wire Adj. Step: This is the increments of adjustment. Small numbers are very small
adjustments
• Kick Open Enrich: This is the amount of extra fuel added once “kick” is invoked
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