I know after a cold start its in open loop and the computer tells the engine to run pretty rich. Its my understanding that in cold weather the car runs better rich but I live in texas... just curious if I could change these to the normal 14.7:1 without any adverse effects?

BTW I dont have cats if its for faster catalyst lightoff

 

Anyone...

 

The table, I believe, ties the cold start A/F enrichment to the coolant temp. Hence, it will not automtically pick an A/F ratio that is to rich for your TX climate... it will set the enrichment to match the actual condition indicated by the coolant temp.

 

Thats right my bad, well is there an adverse effect to making it leaner at the lower coolant temps? may save some gas.......

 

When the engine is cold, you need a richer mixture to get it to ignite. Just like the "choke" on a carb... it will misfire and stumble if you lean it out too much on cold start.

 

Thanks!

 

I am in the same boat here in GA. Is there any slight tweak that can be done? It isn't too bad, but I smell gas in the cab during the first few minutes.

 

I lowered my whole table 3-5 points (= tenths in AFR) without any bogging induced.

The factory makes the cars run rich, you can't say much more than that! At WOT and at startup!