Disa removal / delete?

[bcredliner]

As mentioned several times, with the DISA valve flap removed engine performance is compromised since you lose low end torque and high end horsepower. Losing torque and horsepower will also negatively impact mileage. Since you have to remove it to remove the flap, I would rebuild or replace it, no exception. When the flap is rattling it should be addressed ASAP. Currently it is a small low cost problem but could become a huge cost issue at any time. It is likely the reason you didn't notice a lose of performance when you removed the flap on your diesel was because it may not have been sealing for some time. IMO you should fix it right rather do a shade tree work around.