GAir box help

New to box stock racing. Runs great with aftermarket filter adapter but sputter when I put stock air box back on. There are two line ports on the air box. One goes to valve cover were does the other hook up.
 

flattop1

Dawg 89
Fuel tank vent .
 

DynoDon

Moderator
Did you or someone change the jets to run the aftermarket filter adapter?
 
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