oh one last thing.. If you ever want to have a Hondata program to your car.. You'll only need one o2 sensor (in front of the cat) and disconnect the one in the back.. The hondata replaces your ODBII ECu which uses 2 O2's with an ODBI and your shit will haul ass! Way better than installing an APexi V-AFC.. Also AEM has a ECU out as well but costs more.. So if your thinking of doing that.. dont waste your time with the O2s just get the computer now.