Not sure if you've got this fixed or not as it was a while back, but I had the same issue. I sent my ECU to Horsham Developments, they disabled the immobiliser check, now starts just fine. The red light stays on when I'm driving (the immobiliser/alarm indicator light) but I've learnt to live with that. Also, the OEM headunit would occasionally sit in 'Secure' mode, which means it doesn't do anything - that fixed itself after 3 months happily enough. Please let me know if you got it sorted.