I spent a few hours with Dzenno yesterday to street tune my car. My baseline logs show there is plenty of power to be had on 94 pump gas even with running the most aggressive OTS map (S2+FMIC)
He was able to adjust my timing in the low/midrange while slightly reducing load targets and yet see very noticeable gains. We did several runs fine tuning the maps until the logs looked just right. Dzenno is quite meticulous and will make sure your car is running well. For anyone that is on the fence about getting pro tuned, I highly recommend it. I'll report back once everything is finalized and I have a chance to hit the dyno.