What is a good item for Porygon-Z that can be used competitively?

Question

I'm talking about competetive singles here, so don't give me items like the Cleanse Tag, which only helps in-game.

Answer 1

The only notable items Porygon-Z actually uses are either that of Choice Scarf, Choice Specs, and Life Orb. All of these using their respective sets and uses. Obviously, the Choice Scarf set is to be used if you want to be a speedy Porygon-Z as you wallbreak, where as Choice Specs is to be used only for Wallbreaking at its finest. As for Life Orb, this item is only to be used with a booster of choice, in Porygon-Z's case being either Agility or Nasty Plot(Basically duplicating the choiced items.) As for a recommendation, I'd suggest the Choice Scarf set just to test it our, but you are more than happy to try the other sets. Here's an import of the set:

Porygon-Z @ Choice Scarf
Ability: Adaptability
EVs: 4 Def / 252 SpA / 252 Spe
Modest Nature
- Tri Attack
- Dark Pulse
- Thunderbolt
- Ice Beam

Answer 2

Choice Scarf/Specs

Choice Scarf will help it Outspeed multiple pokes and threats while Choice Specs will Boost its already Insane Spatk even further.

A few good Sets.
PorygonZ@Choice Scarf
Modest/Timid
Download/Adaptability
252 spatk 252 speed 4hp
-Thunderbolt
-Ice Beam
-Psychic
-Tri Attack/ShadowBall (Tri Attack if Adaptability)

PorygonZ@Choice Specs
Modest
Adaptability
252 spatk 252 speed 4hp
-Tri Attack
-Dark Pulse
-Thunder Bolt
-Ice Beam

Life Orb is also a good item and doesnt lock you into a move but doesnt boost attacks power by as much as Specs would