Hard starting when cold

[DCVING]

I have just installed some red stripe injectors in my car and am experiancing a very hard too start contition in the morning and if the car sitts for some time, seems like the fuel pressure is good but mabey the pump doesnt prime enough. I had no problems with the stock injectors at all, as a matter of fact it started faster than any regal I have ever heard. What might be my problem?

 

[Ormand]

I have a guess, but it's just a guess. Some injectors open/close faster than others. The ones that are slow tend to be rich at idle, unless the chip is specifically tailored for that. Red Stripes may be like that, I don't have any experience with them. Or maybe it's the other way around, and now the engine is lean when it starts. But I would guess it's getting more fuel, and has to get to higher rpm before it starts. Got any scan data, like idle O2 readings, IAC, etc. Did you get the chip for the new injectors from the same source that provided the chip for the stock injectors? Might be useful to check with the chip supplier, and see if he/she can help. Pretty sure Eric at Turbotweak can deal with Red Stripes, not sure about who else.