hi, i have my check engine light on and was assuming it was due to me gutting the precats and the rear o2 sensors were telling the ecu that the front was not doing its job. i took my car to autozone and they ran the diagnostic plug in and it came up with code "PO113" which has nothing to do with exhaust or o2...its Intake Air Temperature (IAT) Sensor. they did not have one available for me to buy and replace but i really do not understand this one...i beleive the IAT is what is mounted under my k&n cone and has a red thermostat reader looking thingy that you can pull apart and there are clips and a plug looking piece on the top...like a [email protected] i bought one of these resistors on ebay that say they add hp but it gave me the light...if this is the problem do i have to find a new IAT and replace it? if so, is it just the part that plugs in you replace? also, should i still install the MIL eliminator i purchased for the rear o2 since my precats are gutted? my car feels like it has been running in safety mode (acceleration has gone down and car hesitates VERY bad from 1st-2nd mpg down too!) any help would be MUCH appriciated!!!