EGR Valve Blanking Plate / AiS Delete Block Off Kit – Various Hyosung Carb Models

Description

The secondary air valve setup—often just called the EGR system by owners—is a factory addon used to pass old emission rules by diluting your spent exhaust gasses with cold air from the airbox. While it works for emissions, it causes massive loud popping and banging whenever you fit an aftermarket exhaust pipe, and it leaves your engine bay looking like a mess of messy rubber tubes. Fitting this premium aftermarket Hyosung air blanking plate block kit gives your engine area a clean custom look. It also keeps your vacuum pressure steady for your fuel tap and lets tuners get an accurate look at your fuel mixture without outside air dilution on local roads.

💎 TUNING BLOCK HYOSUNG AIR BLANKING PLATE SPECIFICATIONS

📜 Confirmed Fitment Guide

🔧 Install Tips

• Part 1 — Airbox Blocking Help: For step-by-step hose advice on 125cc or 250cc twins, head straight to the forums thread here. If you are working on a larger 650cc v-twin, head straight to the forums tutorial here.
• ⚠️ Part 2 — Fitting the Alloy Plates: We are not responsible for old factory bolts that snap off or are rusted stuck in the head. Take your time, soak them in oil, or use a local garage if you are stuck.
• ⚠️ Seal the Intake Holes: Go right under your airbox floor and check that the old supply hose opening is completely sealed shut. Leaving this hole open can draw in dirt and cause serious internal engine issues.
• Cap the Manifold Pipe: Slide a rubber cap tightly onto the empty vacuum snout on your intake rubber manifold where the old valve used to feed.
• Ditch the Old Pipes: Unbolt and completely drop away the entire heavy steel hose assembly from the cylinder side ports.
• Skip the Sealant: Clean the flat block faces and use the fresh paper gasket included in the box. Do not use messy liquid RTV silicone paste here.
• Watch the Torque: Tighten down your new stainless bolts gently with a hand hex key. These cylinder blocks use a very soft aluminum alloy, so overtightening will instantly strip the thread holes out.
• Check for Leaks: Fire up the engine and hold your hand near the plate face. Listen out for any subtle hissing sounds or loose hose leaks before you go out for a proper ride.