alrite this is the problem ever since i installed a highflow cat made by magnoflow my check engine keeps coming on i had it checked out, they told me that there is too much air flow going through, the computer of vehicle did not know how to read. so i installed a resenator to control the flow or decrease it . but the dam check engine keeps coming back on. i going to break the car in pieces. its a honda accord lx 2.2l 4cyclinder 96model. the vehicle also has other aftermarket parts add to it. i.e camgears, headers, coldairintake,w/ bypass valve. if anyone what could it be please let me know.