I know of a couple of ITA Integra's who are running Hondata S100 systems. They all seem to claim some decent gains from what I've heard. I've been toying with the idea too since I've only tried some custom chip set ups and am having a hard time getting much more than 1whp out of my computer.

I've managed to smooth out the power curve and get my A/F where I want it. But peak power gains have been really elusive.

I've also heard that the Mugen programs work well.

edit - oh yea, and if you go with the Hondata, anticipate the charges of dyno time. Also, to answer the above, I believe the Meccanic shop guys have had success with Hondata as well as custom chips. When in doubt....
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Kevin
Ruck Racing
'92 ITA Acura Integra RS
'92 ITC Honda Civic CX
'85 ITC Honda Civic S
'95 ITS Honda Prelude Si

[This message has been edited by R2 Racing (edited July 06, 2005).]