so the best way to go with ECU upgrade, if i have these mods already done to my S4:
#25
Since you live in LV, i would go w/ an OTS file GIAC or APR....i prefer GIAC more boost
But, if you can have the downtime on your car for a week or so, send out your ECU to either JHM or ASP.....EPL and VAST are out of the question being your locationg