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I have a 72 chevelle with a 4L80E that is shifting hard while i am cruising. is it possible to get af smooth shift under cruising and a more aggressive shift when i hit the throttle.

here is a log...

It work out perfect, now the car running awesome, THANK YOU 5FDP
If I, by any way can help you or buy you a beer/Coke nexy time iam in the US :-), or if you are gonna go to Denmark I will buy you...

thank you, I will try that and let you know

//Nybo

sorry for that.... her it is...

62099

can?t you see it, its in the end of my post, I try to add it here :-)

I am new too this, so i need some help with the tuning,
I bought a ecm with harness from psi for a 72 chevelle.
My problem is, when i hit the throttle hard it retard the spark down to 6-8 degrees....