E-01 uses the same solenoid as the profecB spec II (if i recall correctly, let me know if i'm wrong), so the double chamered design of blitz solenoid will be superior. Also you can't just rely on the boost controller for your boost readings, my opinion of course. I said that because it is too small of a display to read quickly and probably a good idea to have 2 sources to compare something that's as vital as boost level.
