my ride vt ecotec

[vt3.8lt]

yeah i was watching the log on the map last night and it does appear to be a lean spot there but i dont understand y the calc ve goes up when it gets to that spot its almost like something is pulling fuel out of it but i could just be imagining it

yeah this tune is still conservative im goin to work on it some more when i put the car back on the road ive got a few issues to address first like a surge tank and better fit the raising rate reg etc

[Holden202T]

post up youer bin and i can probably better advise why its going lean in that spot ?

[vt3.8lt]

OSE_$11P V104 CAKH V6.BIN

this should be the current bin im using its still a working progress atmbut from what i can see it has a lean spot at 30kpa @2000 and 2200 rpm theres also another lean ve value at 40 kpa and 2200rpm but im still not sure y it is the calc ve goes up when it gets to that position shouldnt it go down? thank you again for the help

[Dylan]

Nsh if it's lean on the wideband calc ve will suggest a bigher number

[Holden202T]

yeah lean means the current VE is too low, and it will re-calculate what you need to put in there....

if the calc ve number is higher than the current VE then you should be running lean, if its lower then its a rich area.

[Holden202T]

ok a few suggestions, if it was me .....

change the econ boost afr table to match the power boost afr table numbers...... if your not going to change everything to e85 numbers then theres no reason to have 8's in that table.

smooth out the VE table, for example, the 2000-2200rpm areas you say are lean, in the VE table they are much lower than the areas around them.....

also your econo spark map is ass about. like 20 degrees at 20kpa and 33 degrees at 100kpa....

i would almost recommend starting from a fresh file personally .... or go back to a tune you have before alot of this stuff changed.

[Holden202T]

i've smoothed out the VE table and fixed some of the other stuff i mentioned above, give it a try.... make sure you do a log of it if you do.

[vt3.8lt]

Yeah im still learning alot about how this system works and so forth i really appreciate the help ill change that bin over as soon as i get a chance and give it a go and log how it goes its good to know how the calc ve works should definitely help in future tuning sorry bout the late reply things have been really crazy atm

[vt3.8lt]

And i intend on changing things back to the e85 afrs eventually once i get things sorted

[Holden202T]

if you do though you need to change everything at once!