Plenty of people run 11s and some 10s on the stock ecu tuned with ecuflash. All you need to tune an evo is an 80 dollar cable, a laptop, and the free ecuflash software. And a good tuner of course.
There are also plenty of people in the 11s on the stock turbo.
If you ever would want to go crazy I highly suggest an aem, as that is what the best evo tuners in ohio tune with. Tym Switzer and David Buschur.
Good luck and you have my dream car you fucking bastard.