they are more efficient and you dont have to worry about heat soak near as bad as air/air ic's. pack your tank with ice and you got really cold water flowing over your cooler at all times. it really helps with intake temps. thats my next step after i get my car assembled again. im air to air right now but im going for 500+ with the ability to go for 650-700 with fuel upgrades. im not gonna buy another air to air when this one starts being a hot peice of metal.