I have cobb stage 2 - 93 oct. I also have velocity stack for intake.
I have an uppipe and downpipe with prodrive muffler. I did a dyno run last month and I got 200hp at the wheel. They told me the dyno machine they have read a lower than other dyno machince.
For your reference, the next guy had a stock 04 STi, and he did
220whp, so I figure I should have around 280 crank hp. Not bad for the money...