You keep saying how much better the OEM needle will work with an open airbox than the DynoJet needle. But you have no hands on experience tuning a DR650 with an open airbox. The problem with the OEM needle and open airbox is that the needle will have to be raised about 4-6mm to have any hope of running well enough to make the bike rideable in the mid-range. Raising the needle that much causes the beginning of the taper to rise out of the needle jet way too early causing a low end bog. In the real world the only viable solution available is the DynoJet needle. I'd like to see you show that there are other options and I've even offered to foot the bill to give you that chance. I'd also like to stop hearing about how much better OEM needle is until there is some proof to back it up.