Thanks for your reply David. I did a search and have a couple more questions.
My car also has the following symptoms - hesitation/rough idle on cold engine (none on hot), occasional cold start problem (needs a long 2-3 sec crank). Secondary ignition components are all new. OVP relay is new. New injectors.
Could it be the air flow sensor, and/or the fuel pump relay? How do I check whether these two are working properly - what is the testing procedure?