Speed Density Trim dialing failure

[slow6]

My scans:
I click Average, Load all Data, then:
As you can see I subtracted the Primary VE vs RPM vs MAP
from the VE, LTFTs %(Histogram 3)
as instructed by the old tutorial: http://www.wnyym.com/newbie/tuning_new.htm

and it throws my curve way off, I have a huge spike in my tables/cells now!!

Am I doing it right???

Im trying to dial in the Speed Density Trims

[kabbott]

In Scanner\average-load all data-right click-select all cells-copy.
In Editer\open ve table-right click-paste special-add

You want to add,if ltft's are negative(subtracting fuel)you want to add
the negative number to lower ve at that cell.

If you find that you keep overshooting(which i did)you can use paste secial-multiply by %-half.

[S2H]

In Scanner\average-load all data-right click-select all cells-copy.
In Editer\open ve table-right click-paste special-add

You want to add,if ltft's are negative(subtracting fuel)you want to add
the negative number to lower ve at that cell.

If you find that you keep overshooting(which i did)you can use paste secial-multiply by %-half.

its not an add function
Its a % so its always Multiply by %
as you get closer ... then you can do multiply by % - half

and I actually prefer last value when doing LTFT...seems to get me there quicker

[chrisj6]

You should be able to add?? When tuning fuel trims, they are a % and so is the VE table. So why couldnt you add % to %? I know on something like the MAF curve you would do %.

Chris

[slow6]

hm
so how do I find those -2 to +2 LTFTs?
like this:

"In Scanner\average-load all data-right click-select all cells-copy.
In Editer\open ve table-right click-paste special-add

You want to add,if ltft's are negative(subtracting fuel)you want to add
the negative number to lower ve at that cell."

The guide says (-) is Rich and (+) is Lean

I think I understand what you mean.


This is the only place I've been allowed to post my scans.

[slow6]

my ve ltfts are saying +16
stfts are +20
i dont like that.
no timing retard
max of 40 timing

[Chris@HPTuners]

The V6 doesn't have the same fuel trim cell operation as the LS1.

There was post here someplace about the V6 trims, i'll try to search for it.

Chris....

[Bill@HPTuners]

http://www.hptuners.com/forum/showthread.php?t=135

[Chris@HPTuners]

http://www.hptuners.com/forum/showthread.php?t=292

this one explains the cells.

[Bill@HPTuners]

ahh, that whole thread was posted before i even had my gtp, no wonder i missed it