i ordered a 2006 2.5 engine to replace my 04 rs motor. the 06 has some kind of advanced timing plugs on the heads? so ive heard. im not quite sure if thats what they are or not.... any ideas?? will i need them in working order for my car to start?

 

the motor is in, very thing is turning over fine. with fine spark.

In 06 Subaru SOHC added Advance valve timing. You CAN use the engine in an older car and just ignore it. It has been done a few times on other boards with great success.

 

If you really want it to work, you have to change the wiring harness and get a newer ECU, but there are other obstacles to overcome also. IIRC, the 06's also used the key immobilizer which was also part of the ECU. So you may be better off just leaving it alone.