K1LL3R 1NS1D3

i have aem v2, invidia 70mm tp w/ cel fix and invidia v2 70mm dual exhaust and i get a really loud whistle from 3k to 4k rpms but usually only under certain loads/throttle positions. noticed the whistle mainly after the tp install due to invidias failure cel fix design of another piece of smaller diameter pipe inside the test pipe with metal honeycomb in it to shroud the o2 senser and divert air around it. though it doesnt work and still had to do the non-fouler mod.