94 E320 hard starting when cold

[DANSMB]

I have searched the forum and read so many different things that now I don't know where to start. My car has had the harness, coils and all those related parts replaced and runs perfect, however when cold it takes a lot of cranking and some throttle to start? I see a lot of talk of the OVP relay and don't know if mine has ever been replaced or if it's applicable to my engine?

Thanks for the help,

Dan