i have an integra with a b18a in it, the car was driving perfect until yesterday evening, i started backing up and the ground was soft and i thought i was about to get stuck so i let off the gas a little so as not to spin, then i got back in it, when i got back in it the car just took a big ****! it just started choking down and sputtering and smelling like unburnt gas.. i thought since it was sputtering maybe it had jumped time, so i opened it up and pulled the belt off and set the crank pulley on the center mark, set the two cam gears up and up and the two little arrows facing one another.. reset the ignition timing, fired it up, same problem.. it idles ok, maybe a little rough but not too terribly bad, but when i start to take off, once i get anywhere from 1800-2300rpms it just bogs down terribly, you know when you set the idle to high, the idle will go up to a certain point and just bog itself down and just repeat the cycle? well that is about how it sounds when i try to take off, along with a little backfiring, but the timing is perfect! i was thinking maybe fuel pressure regulator, but maybe not.. any suggestions?

 

I had the same problem, water got into one of my spark plugs because the seals where messed up, check that, I have the same engine as you, I had to replace spark plugs, and wires :/