i currently have my HKS iin VTA mode and have noticed the odd idles and some running rick problems so i want to put it into recirculation mode. I still have the tip that replaces the fin and i think the factory hose. What else do i need before i go and replace things. Do i still run the small tube into the front part of the HKS? And also what does that little hose do? That is why i am looking for detailed pictures because it has been so long i want to make sure i still have all the parts.