Q1: My ltft's are +9.4, I thought lowering values in the ve table would bring them down, I was wrong. What do I need to do in order to get them under +5?

Q2: Is there any way to make my tach more accurate? My log was showing 5750 and my tack didnt break 5500.

Q3: when my truck shifts to third under wot it richens up by a whole point, and holds there. Why does it do this?

 

Fuel trims can be adjusted with the MAF. But since you adjusted your VE table everything is probably off now. That's probably why your AFRs are off in 3rd too.

Are you using efilive or hptuners?

 

After seeing no changes i reverted back to the stock ve table. The rich in 3rd was there from the get go and still exists...


Hptuners

 

What's commanded AFRs in 3rd at wot?

 

First what year is your truck so we know what computer you have.

 

I hope you're not adjusting the entire VE table on the same scale when trying to zero out your LTFTs.

 

need to know what your tuning and what your tuning it with.

 

Do you have cat protection enabled?

Wideband?

 

Lean fuel trims also carry over and add fuel when in PE. IIRC. (Haven't used trims for along time)

 

2001 silverado 5.3
Wideband
Hptuners