BPV cancels out 60%-80% of the gains of the cai caus e it sucks in the engine bay heat and screw up flow. Over time it will dry rot from heat and be ingested into your motor piece by piece. Rule of thumb is lift throttle in large pudles/very small bodies of water and if you can't see the curb or 98%-100% of the fire hydrant don't attempt it if you can.