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5fdp Thanks for the help
I am using a modified delco which allows me to real time tune on a aftermarket program.
I have 2 timing maps and 2 VE maps
1st one is for 20 -100kpa
2nd map is for...

All i got is this factory tune for a maf sensor car.
See picture below
Timing at 47 deg down low looks way 2 radical advanced to me?
And cause its maf based im guessing looks like around 350 on...

I am located outside of usa. Doing a l67 into a older car that runs, i think its referd to as a l27 gm 3.8 at the moment on delco ecu.
I will be running a gm 2 bar map sensor and can get most of the...