plugged spill ports

04cr450

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harford county, maryland
question guys, matt wrote me a tune for my new setup 205/75's from holders), idles bad, and when slowing down cruising the engine misses until coming to a complete stop in drive position.
He wrote me a revised tune and looked like the icp remained the same- truck has the same symptoms. Any other ideas to battle this popular symptom? thanks.
 

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