auto ve tune on 99 camaro ss goes lean

[supershift67]

I am new to tuning and trying to learn as I go but I dont want to hurt the engine doing it. I have a V1. The main problem right now is that the commanded afr goes to 16.8 and sends my wide band to 17 or so. full lean at about 30% throttle. The car lays down and stumbles.what am I doing wrong? it runs rich the rest of the time. this is the first time I have driven the car after installing a 6.0 with ls3 heads and intake. Please bear with me while I try to get this figured out. thanks guys.

[Laychut]

Hi Supershift67,
It is always helpful to post your tune. This way the experienced guys (not me) can give you specific feedback.

Cheers,

Laychut

[BLK02WS6]

Yep, post up your tune and a log if available...

[supershift67]

Sorry, I cant figure out how to post my scan and tune files on here. Ill post when I figure it out.

[Laychut]

Hi Supershift67,
Below is a link to a tutorial on how to post an image.

http://forum.efilive.com/showthread....sting-an-Image

Cheers,
Laychut

[supershift67]

hopefully the files loaded this time

[Laychut]

Hi Supershift67,

As I mentioned earlier I am still learning myself. Your VE table looks interesting.

I see you have modified the VE table. Was this with data from your logging?

Can you post some screen dumps of your maps?

Cheers,

Laychut

[supershift67]

this is my original tune, I did modify the autovetune with updated tables and I did not save an untuned autove tune like I should have. I dont know how to post any screen dumps, i am very new to this and lucky to have gotten this far..

[supershift67]

If you watch the data logging on the scan at frame 2274 the commanded shows 16.8 and the actual is 18. This scared me so I stopped where I was at tuning wise an decided to ask here. I did not have a good base tune to start with so something is out of wack.
The rundown on the car is
6 speed ,
lq4 6.0
with a 225 229 580 590 cam and ls3 heads
2010 camaro intake and injectors.
full length headers to 3" single exhaust. stock maf with 96mm throttle body

[joecar]

Hi ss67,

Your B3605 is lean in the operating range, you need to do this:
- go Edit->Properties and check the Fueling Units, change this to EQR, click Ok, exit tunetool, restart tunetool;
- goto B3605 an remove that trench, you want this area to be at least 1.13 EQR, altho I think 1.16 EQR is safer;





Also your VE tables (Main and Backup) are messed up, revert these back to stock and add 10% (you might have to adjust this initial bump) (what did you add when you started AutoVE...?)