hey guys i have a VE SSV 6ltr L98 with an E38 ECM. I ve just pulled the motor down and done some mods to heads and a new cam installed. before i pulled the motor down a mate extracted the tune for modification.
i completed the mods to the engine prior to the tune being finished. i decided to give it a start on the standard tune just to check for leaks and oil pressure. i turned the key and got a "contact dealer" alarm on the dash. the engine did not attempt to crank at all.
a few days later i got my new tune so decided to put it in, hoping that this would reset the computer and solve my problems. after a fair few attempts to install the tune we got it in. no luck. the alarm remains everytime i try to start it and we have just noticed that the engine light is not coming on prior to attempting to turn the key. whilst installing the tune we had a fair few failed "ECM connection" issues.
i have reset ECM a number of times by disconnecting the battery for 15min periods. we have updated the software also. we have also tested the software on my other car(works fine).
we have since attempted to re install the original tune with no luck. we cannot get the ECM connect at all now.
ANY IDEAS ????