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Startup a/f ratio

shawnschuldt

shawnschuldt

New member
Question here guys. What tables and how do I adjust a/f ratio on a cold start. My tuning has led me to perfect ltft. But as a result cold starts run richer and richer until.it misses a little bit.
 


Not really sure, but thats kinda how any car is. The cooler the temp, the more fuel it will use at start up to help increase the temp of the motor quicker.
 
Take out some fuel then start with 5%,from 80-130 degrees ect as an example.since colder air is denser and your on 65 lb injectors that seems like a logical step
 
You dont have alot of details but I would assume your injector constant is not setup for e85 and you made alot of changes to the maf table.

I would switch back to a stock maf table and fix your injector constant.
 
parkave from what table exactly the "initial vs startup ect cold start" table?

and dark im lost by what u mean on injector constant. do you mean the injector flow rate table? its been awhile but i believe that table had the correct flow rate for the 60# injectors then -30% across the board. right now the car believes it has between 42# to 44# injectors. it starts fine then progressivly richens itself for a minute or two and kinda chokes a little bit if u try to leave before it starts leaning back out.
 


shawnschuldt said:
parkave from what table exactly the "initial vs startup ect cold start" table?

and dark im lost by what u mean on injector constant. do you mean the injector flow rate table? its been awhile but i believe that table had the correct flow rate for the 60# injectors then -30% across the board. right now the car believes it has between 42# to 44# injectors. it starts fine then progressivly richens itself for a minute or two and kinda chokes a little bit if u try to leave before it starts leaning back out.
Click to expand...

Yea the initial vs startup vs ect...the decay tables might also play a role in your issue.
 
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