Hi All first time using the site and i require some technical advice, I have just re built a 1998 996, it has a 16m ECU labed 916 with a standers chip.I purchased a set of Termignoini exhausts which came with ecu and chip (chip 965030aaa)( sounds well )however the rev counter stop working. Was reading that this chip is for a 748 open exhaust(965530AAA) Which chip is best ,and will this cure the rev counter ?