1G Cold Start Problem

[twilson123]

Ok, I have searched and came up with a few possible culprits, but have eliminated one (cooland temp sensor) because it was completely fine on the old setup two weeks ago.

Background:

When I bought the car it was set up for speed density (no MAF, vein pressure converter and vented BOV). It ran like crap and was running very lean. SO I had the shop remove all that, add 2G MAF and AFC Neo - now it's running nice. See below.


When I start the car up in the morning (I'm in Alabama so it's not freezing here), it will crank great, idle up to about 1300-1400 rpms, then drop, rise, bog and die. I can play with the throttle and keep it alive long enough to warm up, then it's fine. My BOV is still vented due to how it was set up before. Can this be my cold start problem? Also, after it's warm sometimes the rpms fluctuate at idle and there is a hesitation accelerating into first gear.

After I get a new Greddy RS BOV and recirculate it, will these problems go away?

The reason I ask is because I don't want to pay $200 for a new BOV and it not be the problem.

Sorry, but I am kinda new to all this.

 

[twilson123]

Anyone think the cold start problem is linked to BOV venting?

FYI - I plan to fix this ASAP but I want to make sure

 

[phirn]

Yes thats your culprit. I have twoo buddys up here who have the same problem kinda, they slead where the return trube is so it helps them form stallign on most morning but at below zero temps they have to sit and keep their cars aliove so get it reciclulating and it should go away.

Pete