I'm looking to get a header for my RS. The Borla's are a great price and I know alot of us are using them. The thing is I'm don't want to trip a CEL. I've also been looking at TWE headers. They have some kind of coating that's supposed to hold in the heat and they're equal length, but are they worth the price? If I could install the Borla and not trip a CEL I'm all for it. BTW I also have a Random Tech cat-pipe.