Taking forever to idle down

The 1UZFE EGR Delete Kit is available for sale here.
My 93ls has new cap rotor plugs wires and coil. Even when its warm outside when I start it, takes about 7-10mins to idle down 650rpm. Is this normal? I used to have a Z28 now I also have a Honda Accord and when Id start it would give it a few revs and it would idle down in a min or 2.
 


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