It's an ADFX, and the whole kit is custom-built for a 2g DSM from the turbo outlet to the throttle body elbow. I just handed it off to a certified professional welder, and he says that visually, there's nothing wrong with its construction. The materials used and MIG welds were quality work. We think something else is going wrong. If they used the right filler for the type of aluminum it's constructed from, then it's probably something environmental in the engine bay that's causing it. I don't want to be too quick to go pointing my finger at ADFX just yet.