No warranty issue - we have them installed on both sides of my son's Mustang GT - never an issue. Also, unless FMC can clearly detail a catch can ruined your motor, they would't have grounds to void your warranty. I've done this same circle with my Harley - adding many upgrades w/ no problems.Does anyone know if catch can will void warranty? I want to install one too but on the fence about it if I need to remove it every time it goes into the dealership. Thnx
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