I've searched and haven't come up with much on this subject.
1. Gears are brittle, plastic, torqued to 72ft-lbs, and expensive
2. Special Subaru ST tools to remove these are not sold by dealers and sell for $180 and $120 respectively by Kent Tool Co.
3. Many people here have built engines and removed them.
4. STI AVCS cams don't have the uber convienent wrench flat on the cam shaft itself like the non-AVCS cams.
5. Subaru engineers are morons for not designing a simple wrench flat in the cam shafts or at least a better way to remove these. I shouldn't have to buy $300 worth of wrenches to take off $600 worth of parts.
What do we do?
Best idea I have is impact wrench on the nut, while securing the gear with a strap wrench.
The problem with this is clearence between gears and damage to teeth. I don't think I can destroy the timing belt to wrap around a gear (to protect it) AND still get a strap wrench on it. Has anybody made a "strap wrench" out of a timing belt itself to do this?