This all is good insight. I don't think many people know what happens behind the dyno scene. It's a valuable thread and the fact that IronHorse has other people's a/f to set along side his own puts more clues out there.

As for government emissions, I don't know how the whole thing works but the ...

Other than this I've been pleased with the tuner but if I can't cure this lean condition then I'm just going to re-upload my stock program back into the PCM and sell this thing. I don't need pistons melting on my show car it has already won more awards than I have shelf space...

I wouldn't be ...

This sounds to me like a bad wideband!
Stock cars run tremendously rich....if he had untuned cars on the dyno that were showing lean conditions on the wideband, I would have to suspect something is up....especially if the only car that had a decent A/F was one that was tuned to that particular ...

I am not sure why your a/f is that lean. During cruise the a/f should be around 14.7 always, if it isn't check your 02's and for any leaks in your exhaust/intake system.
I honestly do not think the predators adjustment range has enough to bring you down to ideal a/f which is 12.8:1 on the LS1's ...

when you go into the Modify Tune menu, there should be a parameter for Power Enrichment or WOT Fuel.

Yours probably has WOT Fuel. This is what you need to adjust to richen up your WOT fueling.

When you go into the Modify Tune menu, select this parameter, and then go positive to make it richer ...

Just had the car dynoed for the first time... This was on a 02' Trans am...

The only mods done to the car besides the performance tune (Predator U7198) is a lid and catback exhaust. The temperture was 90 degrees F & 47% humidity at time of dyno...(Yea, I know not the ideal conditions to get the ...

This is going to sound like a silly question but maybe it's been asked before but I didn't find it in a search...

Now I'm not speaking of installing the Pred program on a dead or weak battery. My question is what happens to your program that has been installed for a long time when the car battery ...