I'm trying to firm up the shifts on the 4L80E in my swap truck. It shifts very nicely when in SD mode but as soon as I re-enable the MAF it loses the firmness - I assume due to the line pressure following the tables?
I'm hesitant to add too much shift pressure as I don't know what's safe/not, this is the first -80E I've messed with but it'd sure be nice if this thing would shift somewhat firm.
Does anybody have any input?
Combo:
LQ4
243 heads
Tick cam
FAST 90/LS2 90
Revmax 3700
Here is the current tune:
Truck - MAF 10.hpt