Lately evertime i start my car (car has never been driven, runnig hondata s100 with basemap) it dumps excessive black smoke @ idle and if i touch the gas slightly, It also has trouble holding an idle and will die out if i dont' give it some gas, Im very confused, the first time i started the car up after the install with hondata it started perfect, no smoke, held a nice idle, etc...it has went downhill everytime from there. BTW i have replaced the plugs a few times.

 

you're running too rich it sounds like...you need to get a FPR and lower your fuel pressure a tad