LOL 6500RPM is redline! Remember he has an 06, but anyway on the 06 WRX's (with the bigger engine) and all STi's you should ALWAYS go with EM before going with a full turbo back. This is because you WILL experience boost creep and could do some damage to your car if your not careful. I would definatly wait until your AP arrives. BTW Im going to flash my WRX with my AP in a few weeks! Anyway good luck with your car!

Ben