I was thinking about the eventual upgrades I want to do to my eco. I already have a dual valve catch can and the Ford PP tune. but thats just the tip of the iceberg when it comes to stuff I want to change or modify. One of the most obvious upgrades is the intercooler. There are plenty of choices, many are stock location and require next to no modification, but some people are saying that you shouldn't use stock location aftermarket intercoolers. Why?