mikew

hi looked at T&E listing he states gd 4 173 ecu box number but there r 7 programs 4 that box number, u need to get the last 4 numbers frm chip inside ecu to id it thn the correct modifedprogram 4 it, thats y chips have a bad name not matching correct program it will run but u wont get the full gainsss

hi ive chipped many bmws 325,328,330,535,540,m3,m5 they workas long as u match the chip in your ecu correctly to the correct modifyd program, rule of thumb 10% gain so the more power you start with the better the gain