best piggy-back system

what would be a good piggy-back system for a KA-T build? would the e-manage system be better than any other one? or is there something better for nissans out there? thanks.

easiest and cheapest would def be the safc … i would go with calumsult realtime for ka-t

rom tune

Get a tune ecu here.http://cgi.ebay.com/ebaymotors/240SX-S13-KA-T-SR20DET-CA18DET-Upgrade-ecu-JWT-Enthalpy_W0QQcmdZViewItemQQcategoryZ33596QQihZ010QQitemZ200220918534
or http://www.ka-t.org/forums/viewtopic.php?t=25123&postdays=0&postorder=asc&start=35