You would still have to fight the drag of the ram pushing fluid back and forth in the lines. I think that is how it would work at least. I don't know if I would do it on a daily driver after how mine turned out. I was not able to drill my restrictor so it is pretty slow. I have had a few hairy incidents with hitting curbs while hot rodding around corners and coming close to entering the neighbor's yard.
Why were you not able to drill out your restrictor?