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What 2step are you using? what settings etc?

Have you tried going to Engine - Exhaust - Gas Recirculation and zeroing both the boxes there.

Here you go

119574

Have you checked the AC pressures?

Here you go mate.

119553

I have a 2005 VZ Calais LS1 4L60E stock file if that helps?

https://ls1tech.com/forums/pcm-diagnostics-tuning/1830132-injector-data-sticky.html

Are you reading and writing with the same hp tuners version? Or have you updated in between? I always suck the tune back out edit and reflash never modify a tune I have saved as I?ve had a similar...

You can still save fuel with narrowbands on using lean cruise.

I can't seem to read the log file, but are you sure the 02s are the correct way around (left and right)

If you want to cut fuel across the board you'd be taking it out of the VE Table

As 2xLS1 said, id be running a pair of 02s, you can run pre cat 02s no problem.

PM Sent

Have the 02s been turned off in the tune or completely removed? can they be refitted and plugged into the harness? i don't get why people remove them.

Stock injectors and stock tune would be a...

Just what i want to do with the nitrous, when its activated pull timing. I'm not worried about the VE multiplier as its a wet shot and i can control the AFRs with fuel jetting.

i wouldn't say you are incapable of learing how to use it.

It all starts with the correct injector data really. as the guys have said i would load a base tune in, input the correct injector data...

What injectors are in it?

Making a lot more sense now!

Cheers!

119416

I'm from Australia, so the 0411 is programmed as a 2001 Holden Commodore Berlina 5.7 LS1.

This is what the Nitrous spark modifier table looks like. very basic but if it works will be perfect for...

Digging a bit further i found this in the System - General Tab.

I will have a play, seems like this points to ECU connector RED Pin 56.

119389

Hi guys,

Just looking into some options for Nitrous timing retard without using external controllers or IAT tricks.

my tune file (0411 pcm) has an option for nitrous base timing retard.
...

What is your alternator charge looking like at WOT?

what voltage is the alternator outputting?

Sill question did you flash all the injector data in?