You really don't gain much performance-wise with this BOV. The only exception is if your stock eBOV is leaking or not holding boost pressure for some reason. The stock eBOVs aren't the most reliable things in the world, especially if your truck is tuned and/or fitted with bigger turbos putting out more boost pressure. However, outside of eBOV reliability, this BOV should really only be looked at as a sound/aesthetic mod.