If you are talking about setting up a 2-step via SCT/HPTuners and others. I have tuned many 96 and up Mustangs, But only certain PCMs/ECUs will allow the 2-step to work properly. I use SCT 95% of the time the other 5% is HPTuners. I have used other tuning software only because the customer has already bought it. So what I have learned over the years is it's not the software it is the car's ECU not allowing the 2-step feature. So if your ECU will not allow the 2-step you need to purchase a standalone 2-step. You have MSD, N2MB WOT BOX with no-lift shift, and others. Do yourself a favor and get the N2MB WOT BOX!!!!! I had two MSD boxes and both had issues along with some of my friends and customers had issues. DON'T spend your hard-earned money on the MSD and get the N2MB WOT BOX it is even priced cheaper.