03sierraslt

iTrader: (22)

Just disable 2nd lockup and see if it goes away.

tgui

Have you removed all torque management?

lxcoupe

iTrader: (9)

To the best of my ability... I can't get someone on the hptuners forum to look at my tune or respond to my threads to save my life lol. Here is my tune file:

https://www.dropbox.com/s/dyjpeo7039...peeds.hpt?dl=0

How would I do that? Just set the TCC Apply Speed values in all categories in 2nd gear to "255" all the way across? Right now in "performance" it's set to apply the tcc at 60mph at 87.5% or above TPS signal:

03sierraslt

iTrader: (22)

Yes, just max the 2nd gear table.

lxcoupe

iTrader: (9)

Should I change the release values as well or just the apply?

GMCtrk

iTrader: (27)

Just the apply.

lxcoupe

iTrader: (9)

Thank you GMC and 03sierraslt, that completely fixed the problem. I do feel like the line pressures could be increased. Even at WOT it doesn't bark the tires on the 1-2 shift. Shifts nice and firm, but I was expecting a little chirp. I'll probably just have the tuner go over things when the truck is dyno'ed with the turbo. At least I'm going into the turbo install with a good shifting trans. So my speedo does read accurate, but I didn't do a rollout measurement or change anything with the VSS. Do these numbers look off?

GMCtrk

iTrader: (27)

I'm glad that fixed your problem.