50hp @ the wheels difference by removing the airbox?!? Did you get Reptyl to make one of his PVC masterpieces for you ?
"Rob" from Amberley - is that Rob Vickery? I know he credited his blown (and then twin turbo ) ute with making the power it did because of Amberley - I wonder if he now works there, or owns the place? Thanks for posting the D/Dynamics chart - it shows a great deal of info, including that great HP gain. Money well spent !