I'm going to have to cut a hole in the TMIC I'll be using soon, and weld on the flange for the BOV. The intercooler is aluminum, and the flange is steel. It's been a while since high school welding, and I've forgotten some things. Can aluminum and steel be welded together easily? Also, would TIG be the best for that? I would prefer to use the flange that I have to keep the cost down, as I'd have to get a new one custom-made since my BOV is so old. Thanks!