I just did this on my 94 EG33 that is now in a 97 Legacy Outback and it may have made things worse. I thought I had slight hesitation at between 2-3000 rpm when getting on the gas so I went ahead and crushed that thing. Everything was fine initially then I noticed the hesitation again and thought "huh, it didn't fix it. Lets get an ECUTUNE" Later that day it got really bad and now pretty much struggles when I get on the gas though it is still quite driveable. What else could it be?
This is my ECU:
and this is what I crushed:
Did I mess something up?