Tuning most EMSs are similar, it's just knowing your way around the software pretty much. Any good tuner can take new software and play with it for a day and usually get to know it pretty well. I prefer AEM for applications that are closer to factory because of the simplicity of install. I use Haltech in some situations where we would install something like a rotary in a AE86 or other hybrid swaps. I still use the AEM box in some of those applications as well.