VE tuning for supercharged camaro ZL1 or MAF only?

[ABADZL1]

When using the HPT VVE editor, Are you supposed to copy/paste to both manifold switches individually? Then click calculate for each one before saving the file? Or does one round of copy/paste/ calculate, change all of them?

[GHuggins]

Individually...

[Higgs Boson]

you have to click calculate before leaving that table or you will lose any changes.

I make all tables the same, then I just apply error to one table, click calculate, then exit the vve editor and go to the SD tables and copy the changed row to the other rows in each applicable table (will be red from your VVE Editor change).

[ABADZL1]

Here's my results from my tune configured for SD. I'm wondering if I should use LTFT only or STFT or my LTFT/STFT math data. Thoughts? Suggestion? TksZL1 M6.Layout.xmlVVE Starter Log.hpl

[schpenxel]

I usually use LTFT+STFT, for whatever that is worth

[Higgs Boson]

I use a wideband but then check with LTFT only to make sure it's -4%

STFT get hit too much by evap and other junk. Using LTFT helps exclude all that, IMO.

[Da-Grump]

After you make changes to your VVE table you have to create coefficients - otherwise no changes will actually be made in the tune...

Is there a guide somewhere that shows the steps needed to complete this procedure?

[schpenxel]

You change the table in vietuvel VE editor and hit calculate coefficients...

[Da-Grump]

And it then populates the coefficient tables automatically? Seems way too easy. What's the catch?

[GHuggins]

No catch 22
Just make sure to make the tables the same if you don't have dod.

[schpenxel]

And it then populates the coefficient tables automatically? Seems way too easy. What's the catch?

No catch. Just make sure you do it for "manifold switch open" and "manifold switch closed".

Bluecat's tool also changes the MAP/RPM zone boundaries which helps it better match the table you want.. But otherwise the built in VVE editor is nice and easy to use.

[dreksnot]

Wish we could charge that - lol - Is this an actual sign somewhere?

More for entertainment, of the shop owner.

[Da-Grump]

I opened a file to play a little. I changed a few cells in the VVE table and this popped up when I hit calculate. See pic below.
Is this something to worry about?

VVE edit.jpg

[schpenxel]

I think that happens when one of the "zones" is too small. Whats that table looks like when you hit show zone numbers?

Not totally sure though. Maybe someone else knows.

[JBZ]

Schpenxel you are correct, the zones need to be wider than i think 2 rows or you will get this error.

This subject came up on the v forum heres the link http://www.ctsvowners.com/forum/66-t...ts-issues.html and interestingly enough the bc tool was in my case what caused it. I found that when i went back to stock vve and restarted using only hpt,s built in i didnt come across this issue again.

I think the key is populating enough cells in the vve map, if you only populate a row or two it wont be enough and will throw off the coefficient calculation. I really think that when whoever is out collecting data in maf fail for the vve map they need to spend enough time trying to populate a good chunk of data in the areas they plan to have the dynamic airflow enabled up to rpm wise. I realize you cant get it all on the street, so i had to guess in some areas based off of cells that were around it. Once coefficients are calculated i always went back in and smoothed it out so it didnt look like the sierras from a plane window.

[Da-Grump]

Whats that table looks like when you hit show zone numbers?

The zone numbers specified in the window don't appear in the table. This is a stock 2011 CTS-V file.

VVE edit 2.jpg

[JBZ]

The zone numbers specified in the window don't appear in the table. This is a stock 2011 CTS-V file.

VVE edit 2.jpg

Unless you accepted the coefficient recalculation it wont show you those maps. For the hell of it, try and reapply those exact same changes and save it to a new tune and see what the zones look like. Every time you make changes it remaps the zones.

[Redline MS]

For insurance reasons and safety of customers from a DSteck inflicted gunshot wound, nobody is allowed in the shop when we are doing a car. I am incredibly busy, and I'm not going back to the days of "what'd you change, why'd you do that, what's that table do, how come you didn't do that?". Ain't nobody got time fo dat.

You're right in that YGWYPF isn't totally true. Tons of places charge a ton of money for lackluster work. I was more gearing it towards the places charging pennies on the dollar for "the same thing".

LMAO..... been there done it....its not a place to be bothered......

[Hoff_zl1]

I have a 12' ZL1 and I'm having an issue even doing the MAF tune, I have the following disabled (cot, dfco, cfco, dynamic air, o2 sensors) but I'm getting inconsistent EQ actual as I'm coming down on the rpm while coasting and other weird areas. I'm graphing eq error vs maf freq.

I feel like something else is altering the calculated fuel. Can someone post their tune for getting the MAF dialed in, and also one for getting the vve dialed in? (Fail MAF only?)