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Cold Air Intake Riser Cold Air Charge Kit
Air Intake, Performance

Cold Intake Air Spacers

You may have heard about UPD air intake spacers, or Cold air intake (CAI) spacers, or VRP air box risers.  Let’s answer three top questions about them. What are they? In various Mercedes engines the air intake is actually fairly good, especially when blessed by tuners such as brabus.  However, […]