Well after much time, effort and expense, I have been able to resolve the hard start issues I was experiencing. As my previous postings have indicated the car has been examined very closely and the culprit was the ECU. This accounted for failed emissions tests (failed the Nox ) as well as extreme difficulty starting.

I hope this will be of assistance to anyone that may be encountering the same issues. Please feel free to contact me if I may be of any assistance.

Thank you to all those who reviewed the posts and also those who shared their thoughts and time.