It's been proven too many times on a dyno that you can't increase power on a turbocharged engine by more then about 2 hp with a "high flow" filter over a standard filter.
If you really want to help your turbo spool up faster remove the muffler. On a turbo diesel a muffler removal will be the cheapest and easiest way to lower trap times and increase top end speed. All this with little, if any difference in exhuast note and the ability to hear the turbo whistling. Now that's a beautiful sound.
You should hear a 1.9L turbo diesel VW with a "mufflerectomy" it is music to a diesel lovers ears. Been there, done that with oversized injectors and stage II chip. 134 mph by GPS and not red lined. It sure will make the ricers with "fart can's" jealous.