A attitude box will only add fuel ( will take away 3% but sometimes you need to remove more) so if you ever have to take away fuel you would have to add a regulator. Or just get a bd box it does both.
If you can't cut fuel more than 3% with the attitude box you should think about the BD box. I know there will be ranges in your RPM that you will want to cut fuel. IE bottom end low RPM's.
