Activity Stream

People seem to get hung up on precision when the point of a closed loop control system is stability and repeatability.

https://ecm-co.com/product/lambda-5220-system/ Someone donate some money so i can aquire this and test wb vs nb accuracy.

I have took builds where i didnt have a good startup map and tuned cl nb and then switched to ol wb. Has anyone used a high end combustion analyzer...

Thanks Guys Finally got a tracking number. I'll let you guys know soon. Given it lets me copy to backup and write, is it as easy as?: Backup...

When I say the calibrations are the same for both I mean it. If the OS ID is the same, and all the segments are the same, and all the CVN hashes are...

Yeah, I didn't mess with that, since I hadn't understood what you meant with that. Now, I do...and I'll do that. I'll also get ahold of HPT on this...

Nothing from as early as 2008 used the post-cat sensors for fueling, they are for catalyst monitoring only. That changes somewhat around like 2014-up.

Hmm yep. Open a ticket with HPT to define the power enrichment cold table. They're pretty good about that kind of stuff. Changing stoichiometric...

Not a solution but you can lower your regulator gain. 75/1.5=50 psi 75/1=75 psi. Have you tried disabling shift lock? Wouldnt be the first time hpt...

Could the post cat O2 sensor being unplugged cause this fluctuation on the driver side? I'm planning on installing my AEM wideband and the O2 for it...

That you can see in HPT. I've seen the results myself. mV measurements through an isolated loop vs through the exhaust pipe, the engine, and...

There's no difference in calibrations between trucks built with case ground and trucks with isolated ground. It's all harness and sensors.

You'll get nothing on that histo if Dynamic Airflow isn't being logged.

The computer does care. That's why I was saying match the O2's to the ECU. They are so cheap on RockAuto. Pair of Denso O2's, correct the wiring,...

Or you can use the fuel spark adder table to modify spark. It scales with EQ ratio. EQ ratio scales with MAP on the Boost Enrich Table. Look in...

Yes it is. OL is a last resort. If NB bounding trend isn't correct then the attempt should be made to adjust PI settings. If control isn't...

Thanks. I don't want to scale the entire tune

LOL I know. Would be great. No E85 here. 3 places in the entire state, none close. 94 is all I got.

Just a heads up, I have a 23 Silverado and if you?re not flashing the ECM and TCM at the same time you will have to pull the ground off of the...

So, at cruise, we're getting there. I'm understanding what to look for and how to read the scans now. Learning how to look at stuff and where to...

If you want to start a new thread every time you have an issue, you have to give all of the details of what you are working on every time.

If you wanted to do it yourself, I believe you will need your own MPVI3 unit. Then you can read the file off your Yukon, license the file with the...

You could scale the entire tune but that's a lot of work. Most just live with it. Pick a timing value you want to run past 1.20 and deal with the...

Amazing how life gets in the way of plans.... Had to fix a leaking axle seal on the kid's car on the last warmish day this stretch, then work. ...

Thanks! Appreciate the tips!

You need some e85 in that thing. LOL.

You can probably be a bit more aggressive. I have my cts-v adding full timing at 50% or above. 40% you're at pretty much max octane and the more...

Talk to whoever you got the harness from, only they will know how they wired the CAN.

You could also do a bypass test. Unplug all the O2s, look at the scanner to make sure they all go to the default open circuit bias voltage (450)....