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Good to know. Unfortunately, the 6.2 cars won't even log the SAE pids. I've tried logging only the SAE RPM channel. Even that won't work yet there is no indication from their website that there are...

I just wanted to let folks know that that standalone logging feature that HP Tuners markets as a primary feature for the MPVI2+ or MPVI3 device does not work at all with the 2023 Camaro. You can't...

I have a heavily modified 2023 Camaro ZL1 1LE with manual transmission. The engine is fully built, 2650, etc. I'm in the process of getting the tune dialed in, but I have this problem where after a...

Why limit the ability to mark files to scanning? While logging on a road course, it's not exactly easy to pop over while driving and type a quick comment. Nor is it easy to even press M or C while...

Any tips on how one might go about tuning at least one of the two models independently? The blending that occurs allows for both models to be wrong but arrive at a correct blend. I'd like to know...

Unfortunately, failing the MAF isn't enough for the Airmass portion of the virtual torque to be ignored. I may make an inline harness to completely remove the signal from the MAF without removing any...

First, thank you for taking the time to respond and help. I truly appreciate it.

If I fail the MAF, the airmass portion of the virtual torque is ignored? If so, that's great information because...

At idle, I have these slight stutters that can be felt throughout the car. Sometimes they register as misfires, sometimes not. I have both the MAF and VVE really close and in agreement. The problem...

I'm a software guy so I perfer to do calculations in my own software where I can analyze multiple logs at once and apply advanced filtering, curve fitting, etc.

What I am working on is a program...

Thank you so much! I'm sorry. I should have figured that out.

I'm testing using known values and the addition of this temperature correction just cut the error in half. Can't thank you enough!

Thanks so much! This is exactly the type of answer I was looking for. However, the way I understand what you've written, the correction seems implausibly high.

For example,
MAT = 40C (about...

Hi Alvin,

Thank you.

Are you trying to figure out what the manifold temp is? As in what temp is used for VVE?
No, I have a good understanding of that.

Or are you looking for like a density...

Thank you.

Your first formula is equivalent to my "gmVe" calculation, and yeah, it certainly gets close most of the time. I was hoping that someone might know the secret to the last little bit of...

Does someone know the precise formulas to work backwards to arrive at a Gen V VVE value without using a logged Volumetric Efficiency value? I've been using something that's close, but it's certainly...

It's a bug. I have the same issue on a 2023 Camaro SS. If you log fewer channels, the spikes will actually appear in the logs more frequently. I reported this to HP Tuners a while back, but they...

The Accelerator Pedal Mode does not align with the Map A, Map B, and Map C Driver Demand tables. At least, that's the case on the 2017 Camaro ZL1. I imagine this is true across the entire 6th gen...

I have a 38% fuel lobe and previously was using the stock Leading Edge Angle settings. In an attempt to reduce pressure spikes when quickly transitioning from high fuel demand to low fuel demand, I...

I eventually dialed mine in to give the appearance of working after many hours and hundreds of dollars in dyno rentals. I had to bump up the requested pressure as you have done as well as play with...

I see spikes at around 600 kPa, but mostly I see 550 kPa where the max is set to 500 or so. I'm sure the mechanical pressure relief valve is probably opening near 600 occasionally.

The problem is...

I'm in DSX Tuning auxiliary pump hell myself right now. I just installed one as part of a supercharger upgrade on my 2017 ZL1.

In the logs, I've noticed a few issues.

When the aux pump kicks...

Here you go. I think this was my final tune. (Note, this tune will only work with a full LT4 engine. An LT1 with an LT4 supercharger will need a completely different tune.)

88177

I had something similar happen to me once. In my case I had reduced the rev limiter in Neutral under
Fuel -> Cutoff, DFCO ->Cutoff RPM vs. Gear -> Normal

I was thinking there would be no need...

I had a similar problem with an LT4 crate engine (identical to '16 CTS-V) I put in my '16 Camaro.

I ruled out true knock with high-octane gas on a dyno and (slightly against my will) ended up...

Wow... There doesn't seem to be any drive on this forum to truly understand the ECMs or to share knowledge. Questions from me and others seem to be immediately responded to by one of a couple hacks...

Bump...