thx so much blk-majik, a relief for me now at least

yeah when i started to download the ROM using ecuflash with ign to on position, everything flashses like a circus and all sorts of warning but then it all went back to normal. I'll try PCMSCAN if it comes again. i took the batt out for couple of mins it was still there but after a while when i restarted my car the CEL was gone by itself.
acamus, ROMID is 53050006, thx for the id. but how do i get the definition files ? i understand that once i get hold of the definition files, i copy it in the metadata in ecuflash ?
Hope to get more help and guidance . thx for the replies