What about Cobb IC? Does that require modifications?
I installed the Cobb IC in the factory location at the beginning of summer here in El Paso. Fairly strait forward install, the only thing I had to "modify" was the removal of a plastic shroud held on by a couple plastic clips.
The part is fantastic quality and makes the stock IC look ridiculous. I am very happy with it.
As far as performance, you could tell it was far less inclined to be heat soaked, the turbos were able to maintain boost and ripping around red sands was a blast.
While I dont have a tune (yet) I will say I think that will be where this would shine.
Caveat: the only reason I went factory vs relocated was because 1. I was worried about a voided warranty if anything happened (could replace all the parts easy if something happened) and 2. I didn't want to modify.
I will be open to relocated in the future though, it looks BadA**!