Need Help with TM on 2009 4.8L Pickup

[Performance SS]

BTM = Brake Torque Management. Try this tune ...

LRT - Thanks for taking the time to help! I did a comparison report against the tune you sent and the one I had prepared to try next listed above : PSS 06 Tip. It appears I have the 3 changes you suggested covered. Should get the truck tomorrow or Tuesday and give it another try. We post the outcome and finding.

Thanks again.

[roughneck427]

I just dealt with this last week in EFI live it has a few spark tables
Maximum Spark Retard
Power Reduction MIN timing
Min final timing

John added them last week as i was having same issues.Ask for an update to that vdf all i did was change shift points and messed with these tables and it barks second gear most changes were to min final timing

[Performance SS]

I just dealt with this last week in EFI live it has a few spark tables
Maximum Spark Retard
Power Reduction MIN timing
Min final timing

John added them last week as i was having same issues.Ask for an update to that vdf all i did was change shift points and messed with these tables and it barks second gear most changes were to min final timing

Roughneck - Is the vehicle you are speaking of a 2009 4.8L? I just flashed it with the suggestions from those that made suggestions, along with some ideas of mine. Nothing changed the performance of the truck. It still will not spin the tires from a stop, with or without TCS on and AC off. I'm going to forward your suggestions to TC and see what he can come up with. Thanks for your input, everyone's input is appreciated.

[roughneck427]

It was on a 2011 5.3 same vdf as a 2009

[Performance SS]

It was on a 2011 5.3 same vdf as a 2009

Roughneck - TC did update the vdf for me with the added tables. I did not have the 2009 4.8L, so I've been playing with my 2012 (which shares the same vdf) and it does seem to respond to the changes. The final timing table does seem to be the biggest game changer, but the 2012 5.3L is very sensitive to timing changes. I'm still tweeking it when I have time and hope to have a attempt ready for the 4.8L truck soon. Thanks again to all and I'm update again once I get the truck back.

[roughneck427]

Yeah min final timing helps the most on the 6 speed trucks and how I found out on this is I used efi live on my Pontiac G8 I tried same settings I used on my car on a truck and your right they are sensitive it shifted way to hard had to trim it back some

[Performance SS]

This is a test tune on my 2012 5.3L. It should be close to what you were dealing with.

Thanks,
Steve