Eliminating cold start

[vanillagorilla]

I search but couldn't find exactly what I was looking for. It doesn't ever really get cold here, and when I first start up my truck, it runs rich while in cold start. That's normal, but it's a PITA with a big cam. Kind of annoying too since its only 50*F out in the mornings right now.

Can someone point me in the right direction as to what tables I need edit to eliminate or at least minimize the affects of cold start mode?

It starts up fine, I got that worked out, but once it's idling it's at like 12:1 AFR. Is this low of an AFR really needed? It stumbles when I go to pull forward or back up if not completely out of cold start. Kind of annoying.

[blownbluez06]

For fueling adjustment before closed loop as the vehicle is warming up, I believe you can make your adjustments in the Fuel Control / OL&CL Open Loop/ Eq Ratio

[WS6FirebirdTA00]

There is no cold start mode, you need to tune your tables correctly to eliminate that. It is not normal. The OLFA and afterstart enrichment tables will help you here, but primarily the OLFA.

[vanillagorilla]

Cool, thanks. It definitely doing some weird things. 12:1 on startup, and then when I go to pull out of the garage it stumples up to 16:1, and then the same thing when I pull foward.

[jimmyblue]

Afterstart enrichment can be skinnied down until
you get crank-and-die or a bad cold stumble.

The EQ (OLFA) table is a source of misbehavior
with big cams, the idle MAP pushes excess
enrichment when cold (or cool). You need to
change that so enrichment rolls on at some
MAP above where you idle, with a little "bounce
room" too. That in turn might mean you get to
play with spark advance temperature adders
to keep from cold ping at light throttle, now
not-enriched. But you've got to get the fueling
settled down to see.