Main Power Up

Main Power Up is an ability in Splatoon 2 added in the update.

The ability appears in both primary and secondary gear slots, and will have different effects on each main weapon, even inside the same weapon class.

Known effects
The effects of Main Power Up are displayed on the Equipment screen on the info tab for the abilities for the currently selected Main weapon.

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Shooter

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Roller

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Charger

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Slosher

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Splatling

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Dualie

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Brella

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Stacking
The table below shows how much Main Power Up increases Damage for weapons whose effect are damage increase.

Calculating Damage
A = Ability Points of Main Power Up = 10 × [Number of Main Power Up Main Slots] + 3 × [Number of Main Power Up Sub Slots]

For H-3 Nozzlenose D

Damage=[Base Weapon Damage]*(1+(0.99×A−(0.09×A)^2)÷120)

For Shooters & Dualies & Splatlings & Splatcharger & Bamboozler

Damage=[Base Weapon Damage]*(1+(0.99×A−(0.09×A)^2)÷150)

For Rollers & Goo Tuber

Damage=[Base Weapon Damage]*(1+(0.99×A−(0.09×A)^2)÷200)

Damage Cap
After the damage cap is reached, adding more Main Power up will not increase your weapon damage.