I was gonna say that adapter doesnt work, I took mine back. The reason youre getting a CEL is the MAF needs to be farther back from the TB, like it was stock. Its too close and causes massive turbulence being that close to the butterfly plate. Also the vacuum hose that attaches to the tubing needs to be BEHIND the MAF, not in front of it. Could have saved yourself some trouble paying a little better attention to how things were before. And how do you have it connected to the TB in the first place? Just sitting there?