Stock 466k mile 2008 6.0 Avalanche need help with tune after headers

[Jack Dobb]

Hi everyone,

I have a 2008 Chevy Avalanche with 466,000 Miles and is still going strong. It has the 6.0, a rebuilt (by me) 4L65E, a 5.3 torque converter(higher stall,) 4.10 gears (factory option,) and Speed Engineering long tube headers.
This is my Daily driver/tow vehicle/highway cruiser.

I have tuned with HP tuners in the past on my Procharged 2005 Mustang's but the GM operating system is much more complex. Could someone look over my tune and guide me with some changes to help improve (specifically the MAF) due to the headers?
This is a mainly stock tune besides multiple DTC's turned off, some trans tuning, Cat-spark changes, and some tip-in changes I believe.

Tune will be in reply below.

Thanks!

[Jack Dobb]

2008 Avalanche round 8.hpt

[gtstorey]

and a log also

[Jack Dobb]

I will post a fresh one after work. Is there any specific parameters you would like to see / type of driving?

Thanks!

[Jack Dobb]

Here are 2 logs. My channel configuration isn't the best, so if anyone has any suggestions on that, let me know!
Log that may be missing the speedo is a cold start (65*) idle down a huge hill then drive into town. Second is leaving town, cruising to other town then a WOT pull.

round 8 short cold.hpl

round 8 long warm.hpl

Thanks!