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Hey everyone, I'm still fairly new to all this but I was making some really good progress tuning the MAF and then VVE tables on my 2006 cts-v. I'm chasing my tail now. I believe I have everything...

So it's been a while but I wanted to report back. I decided to get out of the MAF only world and try my hand at tuning VVE tables (first time doing any of this!!!). I fortunately did good initially...

I need to reread some of these past few posts to do some troubleshooting, but I've been out of town and am going out of town again tomorrow, and just thought I'd do a quick voltage test today when I...

I understand, thank you.

I just noticed you're in Meridian. I'm in Gulfport, not too far away.

Ok I understand about the meter and measuring voltage cold and hot while cranking. I'll have to reread your last paragraph later to try to understand it better. I'm flying out of town for a week...

Sorry what's DVOM? I'll have to look in the service manual to understand the B+/- info, will look into that thanks. I'm monitoring voltage while cranking and it gets into the 8/9 volt range. Not...

So drove the car to work today. Started fine at lunch time after it cooled a lot (~115 F). Started pretty good after lunch after it cooled for ~30 min (190 F). After I got home I shut it off,...

No sir blindsquirrel. I've known a few folks who had those and they were garbage. I have a walmart everstart maxx battery. It's a group size larger so has more cranking amps. I'm writing the tune...

So I found the minimum spark table (don't know how I missed that previously when I compared to a stock tune file....I guess I didn't scroll down far enough). Fixed that and will drive the car...

Thanks Casey A, so there's no way I can monitor starting AFR huh?

As for how it started after I did the "flood" mode I think it started pretty much like it has been, hard to crank. But honestly...

So this morning I did a few things...

I looked at the original tune the car had when I bought it, and the startup airflow was like 45% higher, so I copied and pasted that table into the my tune. ...

Ok here's some tune files.

First is the as found original from when I bought the car.
Second is the tune that fixed the high idle issue, I pulled some startup airflow and base idle airflow across...

So I think I may have confused you a bit. Several things happening here... As far as the removing a bunch of startup airflow, that was like a year or two ago due to a high idle issue after cleaning...

I'll double check but believe it still has the starter heat shield. I do have longtubes, and the engine bay is super tight in these V's so it gets hot under there. The ECT doesn't run super hot,...

Thanks Casey, I understand your idea about monitoring the wideband for starting, I can try that out as my wideband is powered during ignition on. I didn't build the engine so don't know exactly, but...

I'm pretty new to tuning, been watching a lot of videos and doing a lot of reading, etc. I had been playing aroudn with tuning the MAF a lot but think I'm chasing my tail...

Car is a 2006 CTS-V...

Thanks for this info it is helpful. I haven't looked at those filters yet, but do you use the filters to weed out the erroneous data while driving normally? Or do you also only log data while doing...

So I have a question since I seem to be chasing my tail from lean to rich. Instead of logging driving through a bunch of gears at different conditions, would it be better to just do some logs of...

No I don't have any filters. The only "filter" I'm using is 5 hits per cell. That would be great thank you.

I'm MAF only. I didn't realize until I started reading, watching videos, and actually...

Sorry been so long, I didn't see your post. Yeah I'll see if I can figure out how to post it. Just FYI, I am just learning all this but looks to me like my long term fuel trims are disabled also...

So I've done about 13 or 14 iterations of MAF tuning, always multiplying by % half, and mostly just normal driving, nothing crazy. I did a couple decent pulls, but basically working on the low MAF...

Gotcha. I have a lot to learn! lol

Makes sense. How come you go to 1.12, then 1.17, then back to a lower value at higher rpm? Or was that a typo?

I want to make sure I understand this... So are you basically saying that since during PE the commanded EQ Ratio changes, I don't need to worry about any skewed data during my logs, because my error...

I need to read through that some more, but it is making sense. I am finally getting caught up enough to mess with this tuning again. So after a flash, since it will be running rich, should I wait a...