tbss unable to tune vve into bosot

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10-22-2023
poulina

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tbss unable to tune vve into bosot

boosted 2009 tbss file e67/t43

my tooner is saying he is unable to calculate coefficients with my current file with the manifold switch open (2009 tbss), and thus unable to amend the vve table above 105kpa. you can clearly see the calculate coefficient button greyed out in attached screen shot.

he is saying my ecm (e67/t43) must be a carryover year and advising i purchase a ctsv ecm

just trying to get a second opinion before i sink more money into this project.

attached is my latest log and current tune.

appreciate any and all help!
10-22-2023
blindsquirrel

That button is only activated after a change has been made to the tables. Try it yourself - make a change, any change to any cell (or all of them) - and ping! the button un-grays like magic. I think maybe if you need to teach your tuner this, you should be looking for a different tuner.
10-22-2023
PGA2B

You need to find a tuner, not a "tooner".

Copy your Manifold Switch Open Table and paste it into the other 3 tables. Do one at a time, once you paste it, then hit Calculate Coefficients, then move on to the next table.

Save file, done!

Plus the image you posted is not the values in the tune above.
10-22-2023
GHuggins

If he's not able to calculate coefficients then how was he able to make the changes already done? They don't come from the factory 0ed out or sloped up into boost like that.
10-23-2023
PGA2B

Exactly!

The screenshot is not from your tune. Look at the Manifold Absolute Pressure values, they don't line up with your tune file.

If the screenshot is what your values are supposed to be, you need to open Excel and copy them into a spreadsheet and paste back into your file. Not sure where those came from, because they are not in your file.
10-23-2023
blindsquirrel

For whatever reason, MAP axis changes are not preserved when a file is opened in a different editor. Like when someone modifies the axis and then posts it, anybody who is not them opens the file and sees it has reverted to the 1-bar axis. The cell values in the table are unchanged, though.
10-23-2023
Alvin

Quote:

Originally Posted by poulina

boosted 2009 tbss file e67/t43

my tooner is saying he is unable to calculate coefficients with my current file with the manifold switch open (2009 tbss), and thus unable to amend the vve table above 105kpa. you can clearly see the calculate coefficient button greyed out in attached screen shot.

he is saying my ecm (e67/t43) must be a carryover year and advising i purchase a ctsv ecm

just trying to get a second opinion before i sink more money into this project.

attached is my latest log and current tune.

appreciate any and all help!

You'd be making a lot of problems trying ot get a CTSV tune to work in a trailblazer. They for sure will work in boost. We do a TON of TBSS stuff and all of them can run 2-3 bar in SD.

Quote:

Originally Posted by PGA2B

You need to find a tuner, not a "tooner".

Copy your Manifold Switch Open Table and paste it into the other 3 tables. Do one at a time, once you paste it, then hit Calculate Coefficients, then move on to the next table.

Save file, done!

Plus the image you posted is not the values in the tune above.

Heads up.. only the last table is used.. You can ignore the other three.
10-23-2023
poulina

To clarify, this is a custom application (1994 gmc 1500) using a tbss e67/t43, throttle pedal, etc. Single turbo 5.3/6l90e.

NOT actually a trailblazer ss truck.

So what I am gathering is why can I only edit my vve in its 3 bar state, calculate coefficients and write?

The gentleman nice enough to help me get the truck running is advising I switch to a ctsv ecm (which would theoretically only require a new pedal/pinout and file), so he can efficiently help me tune the truck. FYI he has an mpvi2?
10-23-2023
blindsquirrel

Quote:

Originally Posted by poulina

So what I am gathering is why can I only edit my vve in its 3 bar state, calculate coefficients and write?

Well how else would you do it? Why would you need to calculate coefficients unless there's been a change made to the VVE? What are you trying to do that isn't working like you think it should?

Why would whatever method you/they are trying to do work on a CTS-V ECM/OS that doesn't work on the TB ECM/OS?
10-23-2023
poulina

I send a log to my tuner, he takes the lambda values logged and pastes them into the vve, except his version of my tune doesn’t support anything above 105kpa

He copies and pastes my map axis (315kpa) into the vve and isn’t able to calculate coefficients (the button is greyed out).

I am new to this tuning stuff so I appreciate the responses, if it sounds like I don’t know what I’m talking about it’s because I don’t haha.

Thanks
10-23-2023
edcmat-l1

1 Attachment(s)

Quote:

Originally Posted by poulina

I send a log to my tuner, he takes the lambda values logged and pastes them into the vve, except his version of my tune doesn?t support anything above 105kpa

He copies and pastes my map axis (315kpa) into the vve and isn?t able to calculate coefficients (the button is greyed out).

I am new to this tuning stuff so I appreciate the responses, if it sounds like I don?t know what I?m talking about it?s because I don?t haha.

Thanks

Sounds like the guy you're sending data logs to is new at this too LOL

The axis of the VVE table are editable. You have to change it to the 2 or 3 bar setup.

Click the top left empty cell of the table. Right click, then go down to row axis/edit.
10-23-2023
blindsquirrel

And... when he sends your file back, it will have reverted to the original axis labels. Those changes do not survive the file being edited on one computer and then opened in a different one.
10-23-2023
Alvin

Quote:

Originally Posted by poulina

To clarify, this is a custom application (1994 gmc 1500) using a tbss e67/t43, throttle pedal, etc. Single turbo 5.3/6l90e.

NOT actually a trailblazer ss truck.

So what I am gathering is why can I only edit my vve in its 3 bar state, calculate coefficients and write?

The gentleman nice enough to help me get the truck running is advising I switch to a ctsv ecm (which would theoretically only require a new pedal/pinout and file), so he can efficiently help me tune the truck. FYI he has an mpvi2?

That doesn't really change my answer..

I might would favor a 2008 or 2007 TBSS OS which is compatible with your hardware but offers a 2 bar custom OS. You can do it with just VVE but there is a issue "VVE bug" you can search about. Since you are going into this new I'd use a OS that offered a 2 bar custom OS.
10-23-2023
GHuggins

To add to all of this, it almost sounded like you were stating that it had to be in 3 bar format to paste and edit the VE table otherwise it "might be" throwing up a warning or error message? That's if I'm reading between the lines correctly cause it almost sounded like you were hinting that at one point???

If I'm reading into this right, this is because the zones are divided up to require this and the editor won't calculate coefficients unless you are in that format. The way the editor works is you can calculate coefficients for any zone setup over what it's set to, but not under, so if it's setup for 3 bar then it has to be in 3 bar format to calculate out and vice versa if in 1 bar format you can technically calculate out all the way to 3 bar but it won't necessarily be right.

You or your tuner could copy the zone settings out of a ctsv file and use those. He'll just have to make sure to have the VE table in 2 bar format to paste and edit as the ctsv file is a 2 bar axis setup.

As Alvin pointed out you are WAY better off to use a custom 2 bar OS. This will not only give you older style VE tables to edit, but will also give you more cooling fan settings, boost PE settings which are really nice for turbos and eliminate the baro update when getting into boost. That part alone is worth it just because it'll keep your fueling right. If you're at a high enough altitude the baro update can throw your fueling off 10% or more. However at a low altitude it won't hardly be noticed, so keep that in mind if you travel a lot as well ;)
10-23-2023
Cringer

Quote:

Originally Posted by poulina

boosted 2009 tbss file e67/t43

my tooner is saying he is unable to calculate coefficients with my current file with the manifold switch open (2009 tbss), and thus unable to amend the vve table above 105kpa. you can clearly see the calculate coefficient button greyed out in attached screen shot.

he is saying my ecm (e67/t43) must be a carryover year and advising i purchase a ctsv ecm

just trying to get a second opinion before i sink more money into this project.

attached is my latest log and current tune.

appreciate any and all help!

Either your tuner doesn't know what he is doing, or you are not describing the problem accurately. I was able to download your tune, manipulate the axis for a 3 bar set up and alter the VVE table and calculate coefficients on all 4 tables just fine. I don't see how swapping ECM's is going to change anything. The process for calculating coefficients is the same on all Gen4 ECM's.