S14 Sr20 Cold start hesitation problems

[newdude1]

I'm having cold start problems with my car now and I searched old threads and couldn't find a similar problem.

Whats happening is it'll start up 2nd or 3rd try and idle great. But until its warmed up I can rev or drive it at all. It sputters and want to die. Will not rev at all. But once its warmed up it drives great.

I have replaced the following.
-02 sensor
-Cas
-On the correct timing
-Checked tps and its within specs
-No vacuum leaks that I could find
-Recirculated my bov
-fuel pressure is good

Any ideas what could cause this?

[Puertorocgrip]

I had a problem like that with my chipped ECU, running Z32, had to let it warm up. My problem was the plugs were to cold, 8 series, for my set up I ran 7, it stop it a bit, but I still need to let it warm up a bit. I see it like this, if its a stock ECU, it's like a old computer, when u turn it on u have to let it warm up, ecu needs the time to read sensors, to re-calibrated according to motor/weather condition.
Another thing is that your car will run rich till it warms up, perhaps your plug foul out if u take off immediately. A wideband can help you what ur AFR is at that time.

[newdude1]

Im running the 7 series spark plugs and for got to mention, I have a chipped ecu. and z32 maf.

[rwtf]

:picardfp:

check CTS?:coold: