If it has been 48 hours since your last post, you can post another promo. If he doesn't get another one out in 48 hours again, you can do another. Thems the rules. You can't do in two day, though. It's only one promo every 48 hours if you're 2+ over your opponent. It allows them time to make something and put out a promo. To keep people from flooding and running roughshod over their opponent.

So yeah, if you're at 3:1, wait 48 hours, you can become 4:1. Another 48 hours, you can be 5:1. So on and so forth.