Might be a bit off the topic, but seeing as everyone is talking about ECU's...
I've currently got a Haltech E6K, one of about 4 prototypes made if I remember correctly. Anyway I've got a set of nismo 740cc installed and my car will run like shit when started cold for about 5-15 mins of driving.
I have been told by a few mechanics that it's the fact that my injecters are too big and the computer can't handle them. Also that it is "batch firing" 3 injecters at once.
My questions is, would upgrading to a new model Haltech fix my problem with a good tune?