I have an '09 2.5i base stereo.. 3300BT same wiring as 4400 but I don't have to worry about SWC.
I just ordered from Crutchfield today:
Pioneer AVH-P3300BT DVD Receiver
-MTX JackHammer JH805 37.5W (4ohm) x 4 & 500W (2ohm) x 1 Car Amplifier
-Kicker 09S10C4 Solo Classic 10" Dual 4-Ohm compnent subwoofer
-Kicker 09PK4 Amplifier Wiring Kit 4 Gauge
-StreetWires ZN5450 Zero Noise 5 16.4-ft. 4 Channel Patch Cable
-StreetWires ZN5250 Zero Noise 5 16.4-ft. Stereo Patch Cable
-Sound Ordnance BB10-50S Single 10" Sealed Box .54 cu.ft.
After reading this thead I ordered that ''PIONEER DVD VIDEO BRAKE HACK BYPASS AVH-P3300BT NEW'' from ebay.. 3 minutes ago. I'll decide when I'm too distracted.
Will the light dimmer and antenna amplifier work with the Subaru HU install harness from Crutchfield or do you have to rig those up yourself or buy the 20 pin harness from http://ae64.com/Subaru-20-pin-harness-install.htm