well my original plan was an hks cbe, helix catless dp and a cobb up pipe. someone from another subaru forum said the cobb up pipe is pretty much useless, go ahead and get the ewg setup which is this exact thing right here is what i bought:

GrimmSpeed

So i read the description on there and figured this would benefit me more then just a plain up pipe. so i went with that. other people from the website said it would be a good choice. apparently it wasnt. but i was blamed for making a bad choice on a product and not knowing exactly what it did.