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If I'm looking at your WB data correctly ( I have to watch the channels, as your graphing and charts aren't set up the way mine are ), you have a lean spike when you get back on the throttle in 3rd....

That's pretty clever. Did you just drill and tap the intake, leave the TMAP in place for the IAT2 readings, then clip the factory wires and move them over to the sender?

My car pegs the 2.5 bar TMAP at 22.67 psi or so on a MAF only tune and a Mini-AFC. It runs just fine while it does so. Once I get a proper boost gauge/controller later this spring, I intend to crank...

I know you can do 60's, but have never seen 80's done. Just curious how one goes about this.

That is, unless you're referring to scaling just the spark tables, not the fueling and airflow.
...

Your table is all wrong.

When I scaled by 50% ( i.e. made my car believe the injectors are 47.5# injectors, not 95# like they are, I halved my MAF and VE, then started with a 2007 Stage 2 table,...

Glad my Scanner setup helped. Just make sure to tailor it to your setup, since mine is very different.

Got a chance to look over your most recent tune.

You need to scale your spark tables a...

As CSSOB said, set your P0068 enable to 8,192. Mine has been set there since 2012.

You may also consider setting your P0101, P0106, and P0121 enable to 231. Just about all aftermarket tunes I've...

Find correct data for the injectors or do the work and verify them yourself.

If your injector data isn't right, you'll just be chasing your tail, especially when scaling is involved.

Not...

Assuming that this is an Ion Redline, not a Sky, and that you're using the P12 PCM.



Only if disconnected for a long period, 10 mins or more.



When you flash a tune, the LTFTs should...

Hi. I'm Allen from Letohatchee, Alabama.

I cut my teeth tuning my M62 Saturn Ion Redline, which I later turbo swapped and tuned to 421whp.

I recently acquired a 2006 Silverado 5.3 that will...

To the OP, here's a log I took today to give an example of what and how I log my LSJ-T. Here's my Channels, Chart, and Graph setup.

This is on my closed loop summer tune, DFCO off, AC on. Ethanol...

I ran out of MAF at 5,500 rpm running only 17psi, but then my turbo is larger.

Make sure the MAF is in a straight section of tube far enough away from the TB to get a clean reading. You don't want...

Your data looks crazy in my scanner. None of my setup works right with what you're logging. My lambda error shows over 1000% off. Care to post your scanner setup, so that we can see what you're...

I've never seen false knock in my LSJ-T, even when it still had the Heaton on board. It's always been real.

I'm on mobile, so I can't look over your tune right this second, but I'll give some...

Do you have a wideband onboard and serial hookup?

Learn the scanner, specifically the setup for MAF Wideband Error and High Octane spark.

Read lots, make small changes, understand what the car...

Everything is plugged.

The EVAP solenoid isn't designed to take boost, and once you blow it out internally, it doesn't close all the way when it's supposed to and becomes an unmetered air leak.

I ran into a similar issue both with the M62 and the S256, it wound up being the EVAP both times.

No evap = smooth MAF.

After reading Area and CSSOB's comments, I tried running the car MAF only for the first time in a while today, and it ran smoother than I can remember. Who'd have thunk that not blindly running...

I find that with the UEGO ( which is what I use ), it seems to work best with both the wideband and serial grounds going directly to the battery negative terminal.

Serial works great with the UEGO...

This has always been my understanding and practice. I only use dynamic down low because it does seem to actually make a difference at idle and off-idle. Maybe it's all in my head. Down the road...

Or you could just use serial?

Its a primitive PCM that we only have access to half of.

I have always only used Dynamic at low rpms to help keep things smooth where the MAF is lower flow, namely idle and off-idle.

In my...

I tried to look at your log, but without your graphs or charts layouts, not much I can comment on.

Your setup is completely different from mine.

Care to upload your VCM Scanner Layout, Graphs,...

Also, what's the plug gap?

I had issues with the car breaking up under the initial spool, until I gapped down to 0.028.

I have my dynamic set at 2,000 rpm. No problems with spool here.

Car made 418 at 22psi and 16 degrees. E30 mix. No knock. No traction either.