i have a jdm b16a head and block, ys1 cable tranny, p72 ecu. my check engine light is on and my car wont pass 3500 rpm. i have one 02 sensor on my cat and its covered in carbon deposits. is the bad 02 sensor causing my car to run like crap? i dont have any vaccum lines hook up cause i dont know where they go. can someone tell me where to hook up the map sensor? my idle is a 1500 rpm is that normal? is my car in a 'limp mode?'