A tune to help take the idle to 900 - 1050 seems to help that a log
If you have after market mounts and a Alum fyl then a tune is about your only shot at getting any kind of good quiet idle
If you dont have the funds for a tune you can unplug the Idle Air Control Valve (you will get a CEL) then set the idle to 1050 +/- to its gets quiet
This isnt ideal but it works in most cases
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