it's not time for me to do the Smog test, not for another year but i would like to get some questions answered. i have a 1995 BMW M3, first time i smogged it i failed, second time i smogged it after following BMW owners advice i passed. since then i have Installed a Chip, Intake, 3.5 HFM, pulleys, FDK. i know a i'm getting an exhaust within the next year. i have retained all stock parks for the record. my question is come test time, should i install the stock chip back along with the Intake system? not sure how this whole visual inspection works in california so more detailed information is appreciated. also can the 3.5hfm hook up to the stock airbox?