The car if fine to drive around town.

This is an 02 Subaru did not give them close loop delays. From the factory the cars are tuned conservative. The afrs are pig rich and timing is not aggressive.

Since he is on the stock intake the maf is calabrated so even if the turbo is different the afrs will be within an acceptable margin as long as the boost is keep low.

This guy is not pushing the car he is just daily driving it.

to see the fruits of your mods it would be good to get a bigger intercooler, injectors, and tune (which it seems you Know) your tuner may also suggest a gm boost controller.

I would suggest Snowmann or SS (if you want Ecutek) for tuning. They both can be hard to get a hold of though.

Cold Air intake and NO TUNE BAD!
Venting you BOV to the atmosphere BAD!
Meth Injection something i need too GOOD!