Hey guys just bought this 2008 Evo with full ets bolt-ons. Got tuned for all the new parts a few months back the guy said. Has paper work to prove it. But I have thrown a few codes and I have a few ideas as to what it might be. Also the car at 4K will feel like it’s hitting a wall, like whole car loses all horsepower in an instant. I think it could be my MAF, OverBoost, or my ecm needs replaced. I’m no mechanic and I’m new to evos, but this is what I’ve come up with from online. Here are the codes I got : C121C, C2205, U0401, U1417.