Don't know about all that bro...now way in hell this stock car is going to take an 03-04 Cobra in a 1/4 mile race, stock to stock, equal drivers.
If he drove his car PERFECTLY I'd bet he could nail a 13.40-13.50 at my track. Perhaps at sea level he could nail the 13.20 the mags test his car too. But he's definitely NOT going to drive it to stock 12s, the way the FI 4.6 Cobras run.
As far as the boost controller- no, he can't do this without a pretty expensive reflash. The STi's stock injectors as they sit are at 97-99% duty cycle right from the factory. MBC on these cars without increased fuel pump and injector voltage= really ****ing lean which= blown motor.
To get more boost from them, the only affordable, viable option is a $1500 ECU reflash from Vishnu, Cobb, or one of the other big tuners. He's considering doing this. The Vishnu "Stage One" tuning package is supposed to be good for mid-low 12s at sea level.
I like his car too, but my car's got more in it. We've raced four times, as I said. Twice I ran him on the street, from a 20 and a 30mph roll, on a 75 shot. I walked him hard the first time from 30-100 and beat him by a car lenght the second time from 20-120. At the track, I beat him pretty good on a 100 shot (though we both ****ed up the run) and beat him even better on a 125 shot.
This video is from the passenger seat of the STi for our final run at the track. Dude cut a 1.8 60' while I spun em up with a 2.16. I simply outpower and pass him. I ran a 13.42 to his 13.90. If I wouldn't have spun em up, I could've run 13.12 here....
http://www.psc.edu/~fest/race04.avi
The STi is a hell of a car, no doubt, but it's not the be-all end-all of performance vehicles.