90 Integra
B20V
550's
11:1+ CR...
P06 w/S300.

Currently cold cranking fuel is at 10%...

Could this be due to the injectors and if so aside from downsizing, is it something I'll just have to deal with?

 

Does it hot start fine?

What are the symptoms it is having while cold starting?

 

Idles really rough... sometimes just dies. If I give it gas and hold idle @ 2000 or so RPMS for a few like 20 seconds it'll clear up and then idle fine.

 

You don't have a wideband do you?

Have you messed with any of the ect vs fuel trims to add or take some fuel out at cold start to get it to stay running on it's own?

What is the after start fueling at?

Just to clarify, it cranks and catches fine, just doesn't want to stay running on it's own; you have to keep it idling with throttle?

 

Hey good buddy? Is your IACV operational? What are you S300 “Parameters”, “Idle” settings?

 

Hopefully these will help.

 

Check the operation of your IACV and try adjusting the IAC”V” Duty Cycle slide.

 

Sounds good, will do. Thank you.

 

That will help a little, but you need the trims setup properly as well.

Also, give it some post start fuel adjustment too and see if it will idle on it's own w/o the need for you to put your foot in the throttle.

 

Without a wideband oxygen sensor you are tuning blind.
Get one & tune your fuel compensation values.

 

I'll have one this friday.