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Just wanted to again say thanks to both of you. I flashed that version in with no other changes, and logged the drive to and from work. Everything is cleared up and the truck does (and doesn't do)...

Thank you BS! :worship:

Thanks 5FDP. I assumed it was something running in the background and had heard of those tests, but never knew how to log those things.

I don't have access to those tables/options. Short of...

4.8, e67, Summit 8720r1, valve springs, all stock otherwise.

The truck drives great with the exception that it will, at idle, move into Open Loop and command 1.14 Lambda, stays at that for 8...

I'd suggest caution doing it that way, bug.

I was doing it that way initially and my EQ error was extremely close but my STFT from my narrowband o2 sensors was WAY out. This was while I was using...

Just a cautionary word regarding the maths involved in that thread - I'm sure it's something I'm doing wrong, but I was using that math and chased my tail for over 80 revisions without ever getting...

I don't mean to hijack the thread, but can you expand on that a bit? I am using SAE channels for my logging (e67 with ETC) and haven't seen anyone else mention to not do that.

I have to preface my response by admitting that I'm new to this myself, but this has helped me dial in my idle to something I'm happy with.

Log your Idle Adapt Advance. This will show you how...

Ah, cheers! That makes sense. Sorry that I was not understanding that detail before.

Thanks for the advice Kevin.

Do you normally see a discrepancy like I have, where the MAF Error is showing wanting more fuel, but the STFT is pulling nearly 20%?

For the interim, I have my...

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Can I ask for advice regarding idle tuning for the MAF? Based on the log and the MAF EQ Error, it's asking for another 5% in the idle cells. I ran 4 logs before that,...

Thanks for the reply, Kevin!

I saw these corrections in the logs but assumed that was just cold temperature enrichments so I shrugged it off. All of my logs showed my MAF EQ Error being within 1...

I received some excellent help from others regarding my last thread, and hoped I could request some help for an issue that has recently arisen. The truck is an e67, 4.8 liter with a 218/227 cam,...

Cheers. I was going off my factory calibration which had the MAF S/S zeroed out. It is attached, in case you were curious.

I also see the other tab I completely missed. Thank you for helping me...

I added another 2 grams to the Startup Airflow, and after observing a small wobble in the idle during the warmup process, I pulled a gram out of the base running air flow. Throttle input was zero,...

No sir, it's still a MAF vehicle and I didn't have any intentions to make it full SD.

This cal is based off the one I received from the tuner a couple months ago and I've just been adjusting the...

Cheers, boys. Those suggestions helped a ton. It still has a little dip at the start, but I'll keep tweaking the associated parameters to bring that in line.


GTS, is the idea behind the higher...

Thanks for the help Gustavo!


Looks like you decreased the FA multiplier by about 45%, turned Proportional Air back on and increased the proportional airflow by 10% (or is that stock? I know I...

What do you have as far as exhaust is concerned? I don't have any first-hand experience, but I've heard a lot of guys complaining about headers creating a sound that sounds like knock.

Sorry I...

My searching has left me with more questions than answers. I've posted this question on a Facebook group (Goat Rope) and received some helpful guiding from a couple of guys, but I'm just taking wild...

That's great that worked out for you, but I'm currently running mixed and still get the odd dip.

Ah well, it'll work itself out or it won't. It's beyond my abilities to sus out the culprit behind...

Sorry for dragging this back from the dead, but did the OP (SJ90) ever resolve the issue?

My truck is far more tame than your car, but I am having issues just as you were. MAF/RPM/Throttle...