I'd venture to say that there are not many, if any acute effects of taking bupropion orally. It's an antidepressant, an SNRI (right?) so it will take a little bit of time for the desired effects to build up in your system. I was put on bupropion once for a couple of months and the only noticeable, acute effects of the drug in the early stages of treatment were mild discomfort.
If you ingest bupropion through a different ROA, say, insufflation, then it can cause some stimulant-like effects for about 10-15 minutes. From what I hear and have seen, Wellbutrin is a popular medication of trade in jails and prisons for this purpose, but there's a reason the practice has remained mainly in institutions and hasn't spread further. The reason being that it is just no worth it with this drug. 15 minutes of mild stimulation, followed by a headache, with a rather large amount of powder to insufflate in the process.
If you're looking to use bupropion therapeutically, just take it as directed and don't expect any major effects from the outset of treatment. It could end up helping you in the long-run like antidepressants do for many others. Hope this helps.