I am going to be getting a 2001 A4 1.8T in a within the month. I have been researching some performance upgrades for it. I'm going to chip it and I have been looking at some dv's. One that caught my eye was the GFB Hybrid valveI read that it plays the role ofa dv as well as a bov. It diverts part of the air back to the turbo and blows the other part off. I know getting just a bov is terrible for the audi's. But I was wondering if the hybrid valve is better for the engine because it does bring air back to the turbo. thanks for your help