Just had Brentuning dyno tune my otherwise stock 2011 WRX. I wanted a relatively conservative and broad powerband and am very happy with the results. 320 wtq and 288 whp and exceeding stock wtq at 3K rpm. Check out the before/after in my album. I don't think I'll touch the motor for a long time. Swaybars next, springs and dampers after that.