I have a 07 wrx. I had a lean issue for a long time, and when I finally get it fixed I end up now having boost problems. Each time I give the car full throttle it drops on peak. I have the Cobb stage 2 tune uploaded, but it drips each time, it's down to 12.2 psi, not the 16.1 the tune is set up for. I'm guessing my wastegate spring is worn out or the boost solenoid is weak. I know I need a pro tune cause the AP doesn't support all my mods. Any opinions or help to offer?