So far it has been 210 CEL-free miles. Suprisingly, power and throttle response from idle to redline feels markedly improved.
Before I go recommending this to everyone I know, I would like to get some input from other people who have done this.... not just people with pinned secondaries or stuck-open secondaries, but members who have removed them the correct way as not to cause an error code and potentially hurt performance.
So far, there is NOTHING I don't like about having them removed. I can't believe I got such nice gains basically for free. Even my gas mileage is good. (click the link MastaMoon posted for more details).