Runs like cr@p before warming up....

[jdm_sao]

I have an S13 blacktop in an S14. When I start my car up,after it has had time to cool completely down, I have to let it sit for about 10 minutes to warm up, before it runs right. If I only wait like two minutes and try to drive, the car will feel like it wants to stall out, and shakes, unless I give it lots of gas. I have to gas it up to like 2k-3k rpm for it to feel right. Im thinking it might have something to do w/ fuel delivery. The only fuel related mods I have is a 300zx fuel filter, and a Nismo fuel pump. I also have an SAFC II installed. Its not really that bad of a problem, just kind of annoying...any ideas???

[RMiller]

heater wire on o2 sensor? Did you connect the o2 sensor power wire to a 12 volt switch?

[got2b240]

your Dec. Air settings will greatly affect the cars idle and warmup stage on startup. I used to have to change it to get the car started, but now I recirculate