Melvin

Agreed on the AE afr thing you said. And my afr although not reading right is tuned correctly, so that's why I moved on to AE. It's just not reading the right translated value in Megasquirt

concealer404

iTrader: (3)

..... 1-2 POINTS?

Fix that. Immediately if not sooner.

Melvin

It's just what Megasquirt reads but my AFRs are fine. It's not something necessary to do

concealer404

iTrader: (3)

I'd probably go back to square one on this. I couldn't imagine a world in which i'd skip calibrating sensors i'm using to tune.

And i've also followed Scott's AE video a few times and not once have i ended up with an AE curve that looks like yours. It's entirely possible that i rely more on AE than someone like Curly would, but your logs look exactly like what i'd expect with something that doesn't have enough AE going on. And that you're only having problems when applying more throttle also points to AE issues.

At least you've got EGO correction off i guess. But that sounds like it might be more because your megasquirt is being fed garbage by your wideband.

wherestheboost

iTrader: (-1)

Must've shadow edited. The "current tune" I downloaded earlier had both incorporate AFR and EGO correction on. I could only imagine what would be happening, if the gauge said 14.7AFR, but MS says it's 12.7AFR, and is trying to lean it out to 14.7.......

How did you tune your VE anyways? If your wideband reading is "off" by 1-2 points...but you're memorizing it... I take it then you're driving the car, noting the spot on the VE table, holding that condition steady, looking at your physical gauge, take a mental note, adjust VE, revisit the same spot on the VE table, and confirm if your changes were correct?

Or do you drive for a while.....datalog...and then change the VE table one by one by analyzing your log manually (aka not using the VE analysis)? Because if you knew exactly how "off" your wideband reading (in megasquirt) was, I'd simply just adjust the entire AFR target table, and turn EGO back on - that's if you don't want to fix your wideband connection.

This could all be easier...and more efficient...if you fixed your wideband connection.

Savington

iTrader: (31)

OP is well on his way to a motor replacement IMO

DNMakinson

iTrader: (3)

OP, what WBO2 set-up? If Innovate LC-2, there are known values to use for correction / calibration. Don't use mental offsets, or fudged numbers. Use correct calibration. I'm not sure how far off yours is.

My set-up with LC-2 and MS3 is 0 = 7.2 and 5 = 22.2 (vs Innovate's published 0 = 7.35 and 5 = 22.39). Brain publishes other numbers but they calculate to almost exactly the same corrections. These corrections are for the grounding error. Your errors may be different.

Melvin

I have an AEM UEGO which isn't supported with calibration so it's kind of hard to adjust values. It's honestly not that hard tuning without an accurate wideband reading in Megasquirt because I do more myself. It's what where'stheboost said (his first described method). Megasquirt doesn't have a problem with my values and doesn't correct them because it's not an extremely different value

Melvin

I would like us to talk about the hesitation problem not about my AFR being off in Megasquirt. I will check out some pulsewidth settings like Scott said but if anyone has any non AE related info I would appreciate it

Melvin

I still will try to get good values for wideband calibration, but it seems like it's non linear and I've had places where it lines up and places where it doesn't

ManiacLachy

Do you not understand that so many of your problems are rooted in the fact that you wideband isn't calibrated properly? Fix this! The systems of the ECU aren't independent, they're inter-related and AFR is the basis for many of them. We aren't getting sidetracked to make your life harder and avoid the question.

wherestheboost

iTrader: (-1)

Everyone should take a turn to say fix your wideband...

Fix your wideband.

Then again, I think everyone's said it already.

concealer404

iTrader: (3)

If it's off by entire points, that's not just a calibration issue. That points to your wiring being garbage and should be addressed.

It's also not hard to find the published calibration numbers/voltage points for that wideband on the internet (or in your user manual). I bet it would take entire minutes.

sixshooter

iTrader: (12)

OP keeps telling everyone that they are wrong every time advice is given. It must be true.

wherestheboost

iTrader: (-1)

After all the fuss about wiring...I just went and used the power and ground from the cigarette lighter. Gauge matches MS. Also AEM UEGO.

Melvin

I've been trying to input wideband bounds for 6 months, ever since I got the wideband. I put in the bounds that came with the instructions (voltage vs afr) and it still doesn't work. I'm not a dumbass I know how to plug in numbers, and I've already tried. So I got it close and made sure nothing was affected by them. Maybe I'll try a new ground as that sounds like a cause. Ecu doesn't mind these off values as I watch what it tries to fix (nothing). Back to AE, some of you said my chart looks off. I didn't care that it wasn't finished or finely tuned because even when I max out the added fuel in AE, there's STILL a lean spike. The whole point of AE is to nullify that. So if it still lean spikes then there's something else wrong. I keep trying to tell you guys this. There are other things that can cause this hesitation. If you guys only know of the AE solution then just don't respond. If you want to come and try to figure it out like I've been doing, be my guest and you'll see why I'm asking this question and why I'm telling you AE won't fix it.

Melvin

Thanks for a forum record probably -28 cats in one day

wherestheboost

iTrader: (-1)

Have you read any of the responses on here? First we said it was AE - since that's usually what causes this. Then we saw the issues in your MSQ, then we saw the other issues. Then we list more issues...all surrounding your wideband. AE can only fix so much, but you need to fix your VE table. Can't fix your VE table if your wideband is botched. Fix your wideband. Get the gauge and the MS reading to match. Then we can reconsider looking at other things.

For fun's sake...when you do "fix your wideband", post up a video showing the same reading on the gauge and laptop

No one's saying AE anymore. Fix your wideband. How is it currently wired up? What's the source voltage and what's it grounded to? I didn't need to change any numbers on my AEM UEGO. I literally hooked it up, turned on the MS, and picked the AEM UEGO XX-XXXX series, and everything matched. So...in short...

Fix your wideband.

Fix your wideband.

Fix your wideband.

sixshooter

iTrader: (12)

There will be a voltage offset if the power and ground are sourced in different places from the wideband to the megasquirt. There will always be differences unless you source power and ground in the same place for both units. But since that advice is in pretty well every discussion about hooking up your wideband and hooking up a megasquirt and I'm sure you did it that way, that can't be your problem.

Savington

iTrader: (31)

OP, you (apparently) have maps that use AFR Incorporate and EGO correction, both of which is entirely reliant on the AFR value that your Megasquirt sees. So before we even discuss your trainwreck of a VE table, which has to be completely tuned before you attempt to perfect AE settings, your fucked-up wideband input is wreaking havoc on all of the fueling calculations.

Do what we tell you to do. Fix the basics, and then we can discuss the settings that build upon those basics. Or, ignore us, and keep racking up the negcats.

You telling us that you want to talk about AE settings is like a 3rd grader who insists on talking about calculus without knowing what 7x7 is.