See the MPEP section Isaac cited.
"DIY" is not the official name of the process. But, you have to perform a search and explain why you still deserve a patent in view of the results. Under the new process, you really have to do your own examination. You have to show support in the specification for your claim limitations, show your search results in a form the examiner can just import into their examination system, and generally make all admissions against interest that the PTO would like you to make so your application is darn near unenforceable. If you read the rule in detail, and look at any file history for comparison, it will seem as if the Office wants you to provide an extremely thorough and least favorable prosecution history that they can simply ratify.
As it seems to me, the PTO no longer has an accelerated examination process as you are required to submit a ready-to-allow prosecution history such that no examination, accelerated or otherwise, is required of the office.
If you think that's bad enough, a while ago an examiner had a blog and another examiner posted there that s/he never grants any petitions for accelerated examination. After you do all that work, the examiner just identifies one subclass that you arguably should have searched but didn't and rejects the whole thing, sending you to the back of the line (well, really back to your original place in line).
I was shocked examiners even care in what order applications are examined, let alone that they'd use a blatantly artificial device for rejecting a petition. Apparently, they do and they do. I asked for the rule that specified the criteria a search must meet to be considered a "search." The answer wasn't that there was no such rule but they felt perfectly entitled to declare the absence of a search if you missed a subclass that they just pulled out of their ... uh, hat. Yeah, that's it, just pulled out of their hat. They didn't like the then proposed new rules in that it set some objective standard for sufficiency of searching; they preferred the free-form, it's-good-enough-if-I-say-it's-good-enough standard.
I have to admit that, in the 17 years I've been practicing, I've never seen the PTO more hostile to allowing patents and more loathe to actually examine applications on the merits. While I didn't like fee diversion under the Clinton administrations, examination then was MUCH, MUCH better.