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If it's difficult to put plugs in it, chances are you cracked one or there's an issue with the wires being fully snapped on the plugs.

Irridium plugs, the gap is too big for a boosted engine. If...

One of the main things you should be looking for in comparison is the DTC list. If it has codes turned off that are normally on, that's a dead giveaway.

Most of the time, coughing, sputtering, etc. is caused by an ignition misfire. What spark plugs do you have in it? Do you know what the gap is? At the very least they should be a 6 heat range with...

You have something going on with bank 1. It has the fuel trims pegged at +50%. Need to check the header temps with a temp gun. Might have multiple dead cylinders on that side causing a bunch of raw...

Need to post a complete list of mods so we know what we're dealing with. Don't know if this is a stock vehicle with a cold air intake or turbo with big injectors. Follow me?

At operating temp the idle trims are pulling .7 g/s. That means the BRAF is pretty close at least at op temp.

Need to put it back in closed loop and use your fuel trims to dial it in.

Didn't even look.

Is the DTC pending, current, history or permanent? If it's only flagged as permanent, it will take several key cycles to clear. You can't clear permanent codes with your scanner. It will be there...

It's turned off. You need to fix the janky VVE table.

Biggest problem with setting them any higher than about .6 is setting the TPS zero with key on engine off, then when you start the engine the added voltage from the charging system bumps the voltage...

Your description of how it feels, combined with the data log, do not look and sound like a 3400 rpm converter. It should be much looser than that.

Anyway, here's a screen shot. Looks like most of...

That's why I got this!!!! Muhahahaha!!!!!

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FFS how can anyone help without a tune file and data log???? Seriously......

Post what you got.

I know you used to tune for Hendrick.

I'm not talking about setting the idle HIGHER than 950. I'm saying you can't LOWER it.

Same with running different injectors. Not talking about using the...

The idle being locked at 950ish is a widely known issue.

It's been quite a while since I've even messed with one but I remember there being injector data issues that caused fuel trim issues, flat...

Because they suck. There are multiple things hard coded, the idle being the most obvious one.

That PN goes in a bunch of cars. The only V8 car I know of is either a V or ZL1. I flash them all with a V base file just because that's what I base them on. So if you buy that PN off Ebay from...

I buy them off Ebay a lot. I do my own GM programming so that makes them cheap. I also have a local resource and I buy them 4-5 at a time when available, cheap. I sell them so let me know if you need...

There are hard limits on several things in them. I've been shit canning them for years. I have a stack of E67s all flashed with my "canned" speed density file for their LS3s. I just swap them out.

First question would be, you did a write entire after disabling VATS?

FWIW, I routinely replace the GMPP E67s with later CTSV controllers. I'm not sure if the early ones aren't wired slightly...

My favorite response from people posting looking for help ---> "Nah, that ain't it!!" LOLOL See it almost daily.\

Fuel trims aren't working. It's overly rich at idle. Narrowbands are roughly...

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Here we go again.......

Oh shit Robert got him a crystal ball y'all LOL

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No offense but, if your tuner couldn't figure it out before, might be time to find a new one.