i have an ls ....how much should i bump up the fuel? ....and anything else to tune the car with the afc? thanks....

 

Dyno time.

 

up? no down, you want to lean it out (if you are NA) i tuned mine cuz i got bored
its basicaly -3% airflow reading witch changes you map sensor by reading 3% less air, so i leaned it out 3% from 5000-redline and if i remember correctly it richens it a few hundred after redline. No knocking or pinging i calculated it to be 1/2 a fraction off the ratio. Felt a little better but nothing to get excited about

 

Hey anyone can tell me how to tune my car?

I know stupid question, but I would like to know

 

get on a dyno.. smooth out your a/f line..