underpressureWs6

iTrader: (17)

i have a performabuilt 4L65E level 3 trans with yanks py3400 converter all with 580 miles on it, i just got a speed density tune last week and noticed the shifts were a little stiffer and it clunks into drive from neutral or park now, what should i do or check???? any help is appreciated!!

performabuilt

iTrader: (25)

Well if it happened after the density tune bear in mind several things.
With that set up air flow is calculated not measured the trans line presure uses the air flow to calculate load and affects line presure. So its likley you actual line presure at idle is higher causing the clunk feel

underpressureWs6

iTrader: (17)

will it be fine if i leave it alone, or what do u suggest i do??

performabuilt

iTrader: (25)

If it not really bad should be no issue , Of course I cant actually feel it. If it seems to harsh you could have your tunner lower the line a bit at idle or even lower your idle speed

underpressureWs6

iTrader: (17)

if my tuner can lower the line pressure just a tad only at idle then i'll do that, Thanks a lot for the help!!

performabuilt

iTrader: (25)

Your welcome . Thats what I am here for.