No-one has mentioned NepTune! Neptune is much cheaper than Hondata and it, quite frankly, blows it out of the water. 1/2 the price, twice the features... you can't beat it.

http://www.hrtuning.com/index.php?page=neptune

Things like individual cylinder trims, precise ignition timing control, on-the-fly switchable maps, spray control, user-conmfigurable 2-step WITH anti-lag (teh hotness), IAT and ECT corrrection tables, the list goes on and on.