hard start after flashing tune
#1
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Joined: Dec 2009
Posts: 1,573
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From: Birmingham, AL
how come after every time I flash a new tune my truck wont hardly start and will only run for a second or two then shuts off?? then all the sudden its like something flips a switch and it runs fine.........
#3
I am betting you are speed density, if so then it is because it has to set the MAF code and learn the idle trims as I was told. Mine does the same, it has done this since I went 2bar in 06'
#7
my 408 did that for a while. i have no clue what charlie did to fix it but it fired right up after every tune after he messed with it. i want to say it was in the base idle airflow table? i'm probably wrong.






