What are some easy, quick, and cheap ways to boost the power of my STi? I don't want to tear my engine apart, but I do want to maybe add, or change out some things to give it a greater snarl!

 

First thing you should do is get a turbo-back with no cats and a CEL fix, you'll notice a huge gain.

 

boost creep is easily solved with wastegate porting, be advised though, if you have the APS downpipe, the wastgate section of the DP needs to be ported as well, as the door can hit the block off section. (APS= good quality with poor engineering).
Cheers,
Joel

 

boost creep is easily solved with wastegate porting, be advised though, if you have the APS downpipe, the wastgate section of the DP needs to be ported as well, as the door can hit the block off section. (APS= good quality with poor engineering).
Cheers,
Joel

 

boost creep is easily solved with wastegate porting, be advised though, if you have the APS downpipe, the wastgate section of the DP needs to be ported as well, as the door can hit the block off section. (APS= good quality with poor engineering).
Cheers,
Joel