The Skybrary
High-Flow Air Filter
Upgrade Category: Engine Upgrades
Drop stall speed by 20%. Your range will take a little hit, but so will your enemies in combat.
Armor (mm)
Armor Class
Ammo (rounds)
Range -2%
Max Speed
Stall Speed -20%
Slots Required 2 Engine slot(s)
Price: 20,000Ģ
Availability: Valvia, Arcadia, Alpha 10

A great way to lower a plane's stall speed, this upgrade features a better stall cut compared to Internal Air Diversion Plates and Port and Polish.

Combat Festival Candle · Increased Ammo · Mad Props · Mega Ammo · Shiny Red Light · Sleigh Bell · Super Ammo
Engine 4 Barrel Carburetor · 6 Barrel Carburetor · Boring Out · Coolant System · Efficiency Mod · High Efficiency Mod · High-Flow Air Filter · Internal Air Diversion Plates · Internal Fuel Can · Internal Fuel Tank · Larger Props · Port and Polish · R Sticker · Super Charger · Turbo Charger
Hull Additional Cargo Hold · Gutted Cargo Hold · Gutted Craft · Heavy Armor Plating · Internal Fuel Expansion · Large Internal Fuel Expansion · Light Armor Plating · Lightweight Shell · Med Armor Plating · Steel Reinforced Hull · Streamlined Hull · Wood Reinforced Hull
Wing Drop Tanks · High-Lift Wings · High-Performance Wings · Improved Wings · Large External Cargo Hold · Large External Fuel Tank · Med External Cargo Hold · Med External Fuel Tank · Small External Cargo Hold