i have a heat shield. what happened is i used to have an 05 gti and i had the p-flow from neuspeed on it. i got t-boned by a ford f-250. big motha truck versus small hatch= no good for the v-dub. but anyways. there was oil every where so i just took the heat shild from the gti and put it in my tt. all i needed is a cone air filter so i bought some k/n shit at the rice shop pep boys. but i dont have that small metal filter for that hose. i thought it was just the hose that redirects air back into the air box, but now iam second guessing myself. it might be the hose that pumps air into the exhaust manifold, i think. iam lost. its some kind of emession shit i think.