I would recommend that you approach Sam at GTM for Osiris software and a tuning map for your car. You can't underestimate the value of a good tune from a reliability point of view.
Sam will be able to set up the cranking enrichment for you with the editor software.
Our cars are very sensitive to cranking enrichment - especially when using larger injectors. I had the same problem and Sam helped to sort it out remotely - I am based in South Africa. Car starts perfectly every time now.
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