Tornado; I fixed Race dynamics dual channel box in my new avventura done 800 km. Dual channel box costs 25K. single channel box is also there and it costs 19K. I'm using single channel box in my fluidic verna. As you know Dual channel has two connectors ,one for common rail and one for turbo boost controller. Pickup improved a lot. But I don't know about fuel efficiency as I'm getting 16km in mixed driving in city and on highway. Where as I'm getting 19-21km/Lt on my fluidic verna and I felt Fluidic is always better in pickup and comfort in driving as steering is so light and suspension is soft . Now I'm thinking that I would have gone for new face lifted linea.Facing some rattling noise from doors and spare wheel.