2005 Tahoe ppv lq4 swap questions

[Trxmxzx]

Try this: drive it some more, keep an eye on PE fueling, make sure it is always sufficiently rich.

What I've noticed last time we drove it, it would show 12.7 afr in lower rpms until 4500 then 12.9 afr then around 5600 rpms before it shifted it would show 13.2-13.4

Is that area up high I need to tweek more in the ve to get the proper afr correct

I'm looking for 12.9 correct accross the rpm range. WOT

Sorry it take so long to get back We are busy busy with work and family life's we don't get much of a chance to get together and mess with his tune

[joecar]

...

Is that area up high I need to tweek more in the ve to get the proper afr correct

...

Yes, correct... disable MAF and CL/trims, and correct the VE directly from the wideband (be sure to apply the transient filter).

[joecar]

I understand about family and work, no worries.

[Trxmxzx]

So I've been asked this question multiple times realizing I had no good answer

Could you give some insight? I know it's how you have to do it. Calculating how much airflow is important. Then computer will know how much fuel to add. That's where I get stuck on why, when MAF reads how much

If I'm going to be running MAF why am I correcting the VE table As a fail safe if MAF fails?