I know what your saying, but it's tricky. You may be able to put a fin in the UIM to split the stream a little more gracefully, but you'll be giving up some volume. (And consistent fitment will be iffy on the internal casting.) A custom TB spacer may be helpful, but you still have that 90 degree bend there. A custom UIM will not be cheap either. I agree there are some gains there, but a good solution isn't here yet. Terry did hint at this in the old forums, and hopefully he's still working on something for us.
