I just installed a 94 mustang 5.0 auto computer (U4P0) in my 86 mustang, and it doesn't quite run properly. When cold it will stumble if given more than about 1/4 throttle and when hot it just doesn't appear to have the power it had before. My 86 has a 5-speed. Has anyone else done this swap, and if so, did you experience any of these problems? Also, The MAF sensor is out of a 3.8L thunderbird (I have a 90 mustang 5.0 stock MAF coming) Any advice would be helpful.