Heres a geeky diagnostics question, I know the Astra 2000 G (X16XEL) and quite a few others has got a 16-pin DLC with MULTEC(H)/X16XEL ECU according to ScanMaster ELM v2... It uses the KWP2000 protocol doing a google search on it... ScanMaster ELM v2 says it supports my ECU year and engine...