Was the car running fine, then all of a sudden it just started to run bad? I would recommend re-doing your timing. CAS is maxed out and your only at 15 degree is not right. Its also free to do if your handy with a wrench.
are those injector 04-05 sti yellow top side feed, and do you have the flow chart for them? 04-05 yellow top side feed sti injectors are around 500-515cc and not 550cc
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