best thing to do is eliminate them. Eventually that POS FIAV will leak into your ISC which will short out, and burn up the driver chips in your ECU.
this is so common the first thing I do on a 4g car now is do the free FIAV delete (there's a thread on tuners, very easy) and loop those lines. I will never, ever run those on a car again. Too much money spent repairing ECU's and replacing ISCs /ubbthreads/images/graemlins/banghead.gif /ubbthreads/images/graemlins/banghead.gif /ubbthreads/images/graemlins/banghead.gif