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I don't see any of that in the tune I posted. My follower tables are all stock. The ecm 12199 looks like this:

Low limit normal -47.620
Low limit coastdown -47.620
High limit normal -47.620...

Thanks! I zero'd all the cat heating and lowered the base idle spark table in the 800 and below area, left the bas spark table alone since it technically says "open throttle" which is not idle.. It...

Can I turn off or zero out all the tables for cat heating (Light off spark) since I have no cats? Also, why does an "idle spark" table have the whole rpm range. The idle is the idle and it's never...

Head is spinning. Tons of hours invested learning and tweaking slowly. Have pretty good results so far.. 5.3L Gen IV, No cats, K&N rest is stock. First issue, Starts and idles decent at warm ambient...

Wow, I'll have to work on that. Is the purpose of DFCO to lower fuel by a certain amount whenever it is engaged? If so, I think it would help to engage it much higher than these factory tables. The...

You lost me at cylair enable and disable. What tab is that under? Can you post your tune file so I can see how you did that?
Thanks again.

Thanks for all the help 07GTS. I hunted around quite a bit and discovered the Injector Boundry setup and raised it a bit from 1,500 rpm down and it now doesn't want to stall with throttle at real...

I see. So any idea why the factory tune is so jagged and jacked up? Everything I have read says the maps should look smooth?

So I have the original stock VVE map of the 07 suburban engine, the map of my original setup from a remote tuner and the one I manually modified to try and fit a more "optimized" look. I haven't...

Does adjusting the VVE table actually make changes to the tune? If so, what parameters does it change? Fuel, airflow, timing, all of the above?

The tune I have was done years ago by a shop remotely so it was a guess on their part. It started and ran very good straight away but always had the smelly idle and real cold stumble issues. I...

Found the problem. Had to purchase the 2 credits separately from the module! Spent the money loaded the credits and it worked right away. Duh, thought it was cheaper than it was but it's working now....

Just went back to the HP ordering page to see what credits the MPVI2 came with. When ordering, step 2 was "universal credits" which I assumed would allow you to tune other "universal" cars. Does it...

How do I "license the tune file"? There are no instructions for any of this.

MPVi2 is the only system I have ever had. First time reading the tune and trying to re-flash it. It wasn't that difficult to figure out up till this point.

I seem to be in the same boat. Need instructions on how to get the credits into the module? I was able to retrieve the tune and modify it but it wouldn't let me put it back in after changing it..

Well this is a big let down.. I get my new MPVI2 and get the scanner to scan and pull the tune off the car, make a small change to a couple tables and when I go to reflash the program back in, it...

Well I got my tuner to work, did a scan and downloaded the tune to look at. I don't know what I'm looking at but the Idle coastdown spark vs. rpm vs. Cylair table along with the Idles base spark vs....

Alright, I'll try it and see where that goes.

Once I get the tuner and software I will but was wondering how to start? Take a scan immediately from cold or warm it up and take a scan? Which tables are most relevant for the idle?

Yes it is completely stock internally except the AFM was removed, Corvette exh. manifolds with dual exhaust system and K&N intake so very mild mods.
Thanks..

It is specifically about Gen IV idle tuning right?

OK So this looks way intimidating! I just ordered an MPVI2 for my 07' 5.3L LC9 in my jeep to resolve just two issues. When I get the module and software started, I don't know where to start. The...

Is that at 10mph or 80? The output varies dramatically as the speed goes up. I need to set my amplifier circuit to the proper range. The plug in VSS I got only has about 250mv output but the...

Anyone?:shrug: