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Has to be a leak than, I've done custom intake with silicone hose and K&N filter at the end, the hoses I disassembled including the air box where the filter seats where in really bad shape.
if you don't wanna do the K&N setup you can just grab the silicone hose by MTC.
MTC Motorsport Peugeot RCZ 200 THP Induction Intake Hose These hoses are smooth inside and improve the air flow into the turbo from the airbox with the takeoff to the cam cover. It is a direct replacement for the standard restrictive hose. Handmade from 6 layers of silicone to ensure maximum...