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Has your WUR been modified to be easily adjustable?
My $0.02 - I would go messing with the idle adjuster just yet. It sounds like your WCP needs to be adjusted to raise cruise AFR which will also raise your idle AFR. After doing so your boost AFR will need to be richened up.
The first things I would check before making AFR adjustments:
- Make sure both fuel pumps are getting good voltage.
- Make sure the WUR is getting voltage.
- Make sure all vacuum lines are fresh.
- Make sure your intake piping from air filter to throttle body doesn't have any leaks.
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