2004 6.0 NV4500 Tahoe

[randeez]

Yeah, I have like 3 MSD wires, maybe 2 OEMs, and then 3 random other brands that are red but not MSD. It's kinda a cluster but I have a huge pile of wires and can't stand not using stuff I already have.

I'm gonna get those $130 ceramic boot short ones next go aroud, maybe they will stay together.

Stoich is now set to 14.1 what do you mean stretch the table out? You mean ad some gradually going up in temp so at 68* maybe make that 1.03? or subtract some making it .97?


I remember you posting about that, mine does it maf or no maf unfortunantly

I would copy the three cells with 1.04, 1.08 and 1.12 and move them over to the 86 column (same row)

at the bottom of the 86 column i would put it in like 1.2. then smooth from the 1.2 up to the 1.12. and then smooth it back to the 68 column. let me know if that makes sense

since your map is pretty stable at 50-55kpa that is where the most of the warm up eq is going to be. but if truck is off (100kpa) its going to run along those cells for first second or two till it gets there. the 14.1 stoich value is going to richen up the adder also (and will prob make your wideband display more accurate.

before you were telling it all fuel was a stoich of 14.7, when in reality E10 is 14.1. so if youre targetting E10 @14.7 youre lean. hence the wideband showing lean @15+ after it comes up to temp. the wideband doesnt "read" in air to fuel ratio, it reads lamda. and just spits out a display based on what scale your using gas scale is 14.7=1

 

[pwtr02ss]

I would copy the three cells with 1.04, 1.08 and 1.12 and move them over to the 86 column (same row)

at the bottom of the 86 column i would put it in like 1.2. then smooth from the 1.2 up to the 1.12. and then smooth it back to the 68 column. let me know if that makes sense

since your map is pretty stable at 50-55kpa that is where the most of the warm up eq is going to be. but if truck is off (100kpa) its going to run along those cells for first second or two till it gets there. the 14.1 stoich value is going to richen up the adder also (and will prob make your wideband display more accurate.

before you were telling it all fuel was a stoich of 14.7, when in reality E10 is 14.1. so if youre targetting E10 @14.7 youre lean. hence the wideband showing lean @15+ after it comes up to temp. the wideband doesnt "read" in air to fuel ratio, it reads lamda. and just spits out a display based on what scale your using gas scale is 14.7=1

damn. You impress me with all this tuning knowledge you have.

 

[Dantheman1540]

I would copy the three cells with 1.04, 1.08 and 1.12 and move them over to the 86 column (same row)

at the bottom of the 86 column i would put it in like 1.2. then smooth from the 1.2 up to the 1.12. and then smooth it back to the 68 column. let me know if that makes sense

since your map is pretty stable at 50-55kpa that is where the most of the warm up eq is going to be. but if truck is off (100kpa) its going to run along those cells for first second or two till it gets there. the 14.1 stoich value is going to richen up the adder also (and will prob make your wideband display more accurate.

before you were telling it all fuel was a stoich of 14.7, when in reality E10 is 14.1. so if youre targetting E10 @14.7 youre lean. hence the wideband showing lean @15+ after it comes up to temp. the wideband doesnt "read" in air to fuel ratio, it reads lamda. and just spits out a display based on what scale your using gas scale is 14.7=1

Makes sense, I had heard about that 14.1 stoich value before but I guess I didn't absorb enough to make me do anything about it. The above post has more usable info than 99.96969696969% of posts on the HPT forum.

damn. You impress me with all this tuning knowledge you have

Everytime I learn something new



Hows this look Daddy?

 

[randeez]

damn. You impress me with all this tuning knowledge you have.

we havent started tuning yet lol
this is just the ol garbage in= garbage out
a lot of this is math, so its easier to explain when i can give him numbers instead of well i want it to be 12.8, so multiply by 1.08 adder, but since youre using an offset afr you need to put in 1.10. its not that it cant be done with incorrect info but some of these tables you literally need to only adjust a hundredth/thousandth place value so that .005 difference makes a difference

 

[randeez]

Makes sense, I had heard about that 14.1 stoich value before but I guess I didn't absorb enough to make me do anything about it. The above post has more usable info than 99.96969696969% of posts on the HPT forum.

Everytime I learn something new



Hows this look Daddy?
View attachment 360372

yep, try it an see...should hang the afr a little richer, longer. "colds" starts are still 65-70* right?
theres the table to the right that says startup decay or something like that. im wondering if that table holds the enrichment value that you just rised for that duration. as long as it hits the cell or if the decay is a stop for it only allows it to work if its in the cell for that time. but may play with that one after if it stays rich for too long

 

[Dantheman1540]

yep, try it an see...should hang the afr a little richer, longer. "colds" starts are still 65-70* right?

Yeah even overnight the 6 hours the truck sits it rarely gets below 60ect and I have been a good boy about starting it 5 minutes before I leave.

 

[randeez]

log whether its commanding closed loop or not also

 

[pwtr02ss]

The above post has more usable info than 99.96969696969% of posts on the HPT forum.




Hows this look Daddy?
View attachment 360372

This is why I have such a hard time staying focused on this shit. You feel good about something then next thing you know, you're lost.

 

[Dantheman1540]

log whether its commanding closed loop or not also

Roger, closed-loop active channel added.

This is why I have such a hard time staying focused on this shit. You feel good about something then next thing you know, you're lost.

It's even more fun when stupid hardware issues pop up like a log not recording half the data you need, or a sensor being slow to warm up. But you need to try to learn because knowing is half the battle

 

[pwtr02ss]

Roger, closed-loop active channel added.


It's even more fun when stupid hardware issues pop up like a log not recording half the data you need, or a sensor being slow to warm up. But you need to try to learn because knowing is half the battle

Coming soon big D. My camaro needs some fine tuning too. Its Gen 3 though