ok i had just recently put a magnaflow cat back exhaust on my car, like a month ago, and i never got around to re- setting my ecu until tonight. i did everything right , disconected the - terminal and let it sit for 5 min then i let it run till it got to its normal running temp. then i turned it off and waited a few hours till i drove it again, after i did this as i come to a stop my engine feels like its bogging down, kinda like im trying to take off in 3rd, does anyone know what could be wrong? is it electrical or and engine thing. i need some help, if the engines bad its no bggie im getting a new one but iff anyone knows what wrond itd be great.