Not that it matters or anything, but that looks like a transistor, not a resistor. The "T"849 would also seem to confirm this. That might make it a little more difficult to find a replacement component if you tried to repair the ECU like someone above suggested. Although, if you could find any writing on the one to the right of the blown one, someone could maybe look it up and find a replacement for you. If that's the only problem with the ECU, I'd try to repair it myself first, you will only be out the cost of the transistor if it doesn't work, and if it does you won't have to buy a whole new ECU.