PDI Big Boss vs. OEM Manifolds �When it comes to performance, PDI Big Boss Manifolds outshine the competition! Here's how we stand apart from OEM:Re-engineered for Strength: Our Big Boss manifolds are built tougher, designed to handle higher heat and pressure for long-lasting durability. Improved Flow: Increased airflow means more power and better efficiency—giving your engine the boost it needs to perform at its best.Built to Last: Unlike OEM, our manifolds are designed with premium materials a