Turbo NB O2 WB O2 cylinder select.

[rebuildman]

Set-up
2007 5.3L Flex fuel truck motor and all the hardware including DBW
Added turbo
Added injectors #12613412 with non-regulated 58 psi info.
Started with stock tune from 2006 5.3L with 2 bar SD OS
Added 2 bar MAP sensor with change in setting
Disabled MAF
NB O2 bank 1 sensor 1 is installed in the down pipe from a shorty header, 4 to 1.
NB O2 bank 2 sensor 1 is installed in a box that the turbo sits on, a header log if you will.
4 short pipes from bank 2 cylinders and one cross over pipe from the bank 1 side feed this box.
WB O2 is installed in the turbo down pipe or exhaust.

Two log files, one with the cylinder select all set to 1 in an effort to get fuel trims to just look at the right bank?

It appears that my WB conflicts with the NB and the fuel trims.

Can not get it to idle lower than 1000 rpm.

My WB says lean but the fuel trim says way rich.

I am leaning towards leaning out the idle part of the VE table.

I am sure more needs to be done somewhere.

failMAF.hpt
bankselect.hpl

[dunnjrallen]

p0101 and p0102 need to be mil on first error. VE table looks really high.

[dunnjrallen]

p0101 and p0102 need to be mil on first error. VE table looks really high. I think I would have left the injector control set to factory settings.

[rebuildman]

I am going to answer my question.
Ignore the WB below 4K rpm.
Tune the VE table using fuel trim info. with MAF disabled.
Enable the MAF, tune that table.
That should get me to a good idle at least.

[bk2life]

I am going to answer my question.
Ignore the WB below 4K rpm.
Tune the VE table using fuel trim info. with MAF disabled.
Enable the MAF, tune that table.
That should get me to a good idle at least.

tune BRAF, then VE then MAf then timing -rinse and repeat
Then do idle.
you cant tune idle until your fuel and air are near perfect.
once you change ve you mess up idle.

[rebuildman]

BRAF? Have to look that one up.
Probably better than making s#4t up.

[bk2life]

BRAF?

This is what everything else is built off of.
This is number thing you set.

Russ K has a real nice how to, for tuning this, you can search for it in here or might be easier on google.


braf.jpg

[rebuildman]

Thank You!