ok guys im having a problem ..i keep getting code 43 on my car.. i plugged in the scanner and it says ESC fail..so my questions are. the MEMCAL and prom are the same thing? where can i get a new MEMCAL? if i up grade to a hypertech prom would this fix my problem? i need help guys my car starts running like crap when this happens and i already replaced the knock sensor and the connecter... thanks in advance