I've run IEs 1.8t stage 1 91 octane tune for awhile. I've also recently started to stack my JB4 ontop of it to push it up to 20PSI peak on the IS12.
I'll probably swap IS20 and stay stage 1 and adjust with the JB4 for now. Though I did order a open source tuner from switchleg, so I may dip a toe into that.
I've got logs of stock, stage 1, and stage 1 stack in either JB4 or IE dongle format if you'd like to see them.
If your looking for info, I find FB tends to be more IE friendly than the forums. They have an IE customer group and such where a lot of people from all platforms they support post up logs, questions or issues. Granted you'll also find a lot of circle jerk rhetoric like you do here for Cobb tuners.
IE seems to split the difference between Uni and APR. Uni being high boost, APR being timing. Stage 1 runs up to 16 psi peak with 6.5 timing at 6.5k before shift.