I put the cone filter on and it ran fine for a while.
then I went to start my car today and it started then shut off...Never done that before. No check engine light or nothing. I started it up again, it had trouble keeping the rpms up. I pushed the gas a little they went up and dropped back down once i let go. my car normally idles at 1000 in park until its warm, then they drop to 800. In drive they idle around 650ish. With the cone filter its been bouncing up and down from 500-800rpms. I put my stock filter back on and now im having the same problem. any clue?