I have a CEL 13 (BARO Sensor) in my 00 Civic SI. After a search I see that it's in the ecu...so do I need an ECU?!!? I just did the afc hack last week and have been getting occational and random misfire codes on idle when cold (ice cold!!). I changed my 1000rpm setting and haven't had a misfire in a couple of days, but today I got this (13) code while accelerating in 2nd (low rpm...mild acceleration). Anything you can tell me about this sensor would be helpful!!