Yes. Literally every race car log. Notice all 20 cars on the top 20 list have changed from what they had previously to the EOS manifold and have reported significant improvements. I'll see if I can dig up some before and after logs from some of the big players, but those logs are pretty tight...
Ask for Jake at Naperville Toyota. Also, DM me and I'll add you to the Chicago Area Supra Owner's group. We have meets often, get donuts, drink coffee, cruise, bullshit. The usually car guy bullshit.
Well, that's part of the problem, but I think you're slightly confused. The ECU just needs to be from a Gen 2 B58, not from a Supra. I have a thread with compatible ECUs here. However, the problem is the MT Supras use Yet Another Ecu which isn't even compatible with that.
As always...