When I turn on my car I leave it on for a couple of minutes. It's probably around 5 to 10 then it automatically turns off. If I accelerate for those mins it last until I stop and turns off again. I'm not sure what it is

 

guessing your temp compensation is too lean or too rich who knows?

you need to tell us what the AFR is, what the exhaust looks like, rpm, ECU, map you're using, etc.