This ecu cost to me 500 $ and two delivery (france-usa) aroud 100 $... Im' very disapointed because i think that i've paid for nothing but i want to speak about my problem with a consumer association... Two years ago i has bought just a chip with ash for my first 300zx 1994 and all was ok but with my second order (for my new 300 zx) all is bad !! More he block my emails and block me on aim,it isn't professional !!!