I did a search and I'm surprised I didn't find anything....anywayz.....my buddy just had an OEM ram air hood put on his 99 TA. He has bought the ram air lid for it. My question is.....what else needs to be bought?

I have seen other pics where there is a tube coming out of the drivers side of the silencer. Where does this go and what does it do?

Does the ECM or any computer settings need to be changed? Any other sensors that need to be changed? Will doing this swap throw any codes?

All help is appreciated.