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AGRO
February 11th, 2017, 07:21 PM
Has anyone had success with a speed density tune on a 2016 Z06 LT4? E92 pcm.
Matt510
February 11th, 2017, 09:02 PM
I have a 2015 Z06 A8 (Z07 Package) that I am setting up a base SD tune as I type this and going to do a little logging here shortly. I'll post some updates on how it goes. This is the first one I'm doing with EFI Live. Although for years I solely used EFI Live my hands were a little tied since the C7s were released. The new DI motors and new ECMs are a new animal. Can be very challenging and rewarding at the same time.

Matt Zapalac
510 Race Engineering
Ls1_Rulz
February 11th, 2017, 10:36 PM
you do it SD open loop or close loop ?
AGRO
February 12th, 2017, 01:07 AM
I had a shot at this, the ve table dialled in nicely on cruise and idle, however there was no boost at all once full throttle was applied. The pcm obviously went into a limp/fault mode, I just couldn't find the table to combat it. I will have another attempt shortly.
EFI Tuning
February 12th, 2017, 04:45 AM
Try B302/B303. I noticed them after I finished up a 16 Z06 M7 this week. I ran into the same issue. If they work please report back. The other approach is to dial in MAF then create a histogram of MAF/MAP reported airflow error and apply to the VVE MAP table.
joecar
February 12th, 2017, 07:48 AM
Are you getting a MAF DTC immediately on engine start...?

~Moderator~
joecar
February 12th, 2017, 07:49 AM
...
The other approach is to dial in MAF then create a histogram of MAF/MAP reported airflow error and apply to the VVE MAP table.Good idea :cheers:




~Moderator~
joecar
February 12th, 2017, 07:50 AM
Try B302/B303.

...

Did you mean C0302, C0305...?
AGRO
February 14th, 2017, 04:10 PM
Found the issue, set C0311 to 20 v
problem solved!
EFI Tuning
February 15th, 2017, 08:05 AM
Found the issue, set C0311 to 20 v
problem solved!

Is that table actually allowing SD mode? It seems setting it that high only presents the MAF tests from running which doesn't seem like it will give the intended effect.

Tim
AGRO
February 15th, 2017, 08:09 AM
Is that table actually allowing SD mode? It seems setting it that high only presents the MAF tests from running which doesn't seem like it will give the intended effect.

Tim

so far yes, sd is in full swing.
joecar
February 16th, 2017, 04:12 PM
Please can you post your stock ctz file.
joecar
February 16th, 2017, 04:13 PM
All you need is for a MAF DTC to pop up immediately, does not matter how this is achieved.
joecar
February 16th, 2017, 04:20 PM
Found the issue, set C0311 to 20 v
problem solved!If the MAF tests never run, is the MAF disabled (does a MAF DTC show up...?), is this how this works...?
joecar
February 16th, 2017, 04:24 PM
If you do all of these:
- swap C0301 and C0302,
- set C0303 and C0305 to 1 (or 0 maybe),
- set C0312 to 200 rpm,'

does it throw a MAF DTC...?
ProperTuningOG
February 19th, 2017, 06:38 AM
I have zero problems running the E92s in SD. I prefer to run in SD for our off road race apps. Just make sure the VVE is fully tuned and if there is cam movement, tune that portion of the VVE as well.

I leave the MAF test operational and let it fault, never had an issue with it. I also disable the airflow correlation tests.