08 denali stumble/bogg at take off

[kevmar]

under engine/fuel control/fuel cutoff/control method does one of these have to be enable for the truck to take off or can all three be disabled?

[mattgallan]

it's tunerlocked cuz

[kevmar]

Well alittle info on truck

08 gmc denali, long tube headers, cold air intake, u/d pulley, no cats, exhaust,
tune*(2)*

first in stock tune
then shop tube
then mine

[coryfountain]

do you have a log file, to go with a run?????

[midevil1]

Well alittle info on truck

08 gmc denali, long tube headers, cold air intake, u/d pulley, no cats, exhaust,
tune*(2)*

first in stock tune
then shop tube
then mine

In guessing you have your tune in the truck at this time.? Looking at your tune I see the base timing tables are all jacked up. You are idling at 22* and then you have the timing dropping to 14* at 1200 rpms then ramping back up? This is your Stumble.

I dont see any difference in the shop tune and your tune. Didn't look at the stock tune but follow its timing tables as a reference and bring up your timing from there. MAF tables look factory also and with those mods that cant be good.

[kevmar]

In guessing you have your tune in the truck at this time.? Looking at your tune I see the base timing tables are all jacked up. You are idling at 22* and then you have the timing dropping to 14* at 1200 rpms then ramping back up? This is your Stumble.

I dont see any difference in the shop tune and your tune. Didn't look at the stock tune but follow its timing tables as a reference and bring up your timing from there. MAF tables look factory also and with those mods that cant be good.

I thought the base was just for idle and as soon as you gave it gas it went straight to the main spark table thats the reason I left it alone, the shop tune was scaled up on the maf, mine was tuned with a plx wideband.

but when I get back to home in 2 weeks I will give it a try and get some logs of the run, my computer died and I didn't save them lol

thanks for the help.