Is there any Closed Loop Adjustment in Ecuflash?
#5
EvoM Guru
iTrader: (5)
Well, there are settings for AFR Target in closed loop, only we haven't found them yet.
But the truth is, there is no reason to really adjust it. Typically if the AFR's arent 14.7 it has to do with trims being out of an adjustable range.
However, we will find this setting as more of the ECU's rom is disassembled.
But the truth is, there is no reason to really adjust it. Typically if the AFR's arent 14.7 it has to do with trims being out of an adjustable range.
However, we will find this setting as more of the ECU's rom is disassembled.
Trending Topics
#8
Evolving Member
Thread Starter
Join Date: Sep 2004
Location: Reno, NV
Posts: 138
Likes: 0
Received 0 Likes
on
0 Posts
Okay, school the newbie time...
Everyone keeps posting that anything higher than 12 AFR is way to high, but in closed loop the car runs 14.7 and if your not boosting it will run those same afrs in 6th gear @ 5Krpms cruising along with no boost. So... It's okay to run 14.7 as long as your not on boost?
what makes too lean a mixture bad? Is it heat or knock or something else?
Also, is the max amount of boost you can run dependent on internal mods or is it strictly concerned with knock? So... if you could run 24psi w/ no knock on a stock motor, is that okay, or is there another reason not to run that much boost ?
Everyone keeps posting that anything higher than 12 AFR is way to high, but in closed loop the car runs 14.7 and if your not boosting it will run those same afrs in 6th gear @ 5Krpms cruising along with no boost. So... It's okay to run 14.7 as long as your not on boost?
what makes too lean a mixture bad? Is it heat or knock or something else?
Also, is the max amount of boost you can run dependent on internal mods or is it strictly concerned with knock? So... if you could run 24psi w/ no knock on a stock motor, is that okay, or is there another reason not to run that much boost ?
#9
Evolved Member
iTrader: (11)
Originally Posted by Dus10
Okay, school the newbie time...
Everyone keeps posting that anything higher than 12 AFR is way to high, but in closed loop the car runs 14.7 and if your not boosting it will run those same afrs in 6th gear @ 5Krpms cruising along with no boost. So... It's okay to run 14.7 as long as your not on boost?
what makes too lean a mixture bad? Is it heat or knock or something else?
Also, is the max amount of boost you can run dependent on internal mods or is it strictly concerned with knock? So... if you could run 24psi w/ no knock on a stock motor, is that okay, or is there another reason not to run that much boost ?
Everyone keeps posting that anything higher than 12 AFR is way to high, but in closed loop the car runs 14.7 and if your not boosting it will run those same afrs in 6th gear @ 5Krpms cruising along with no boost. So... It's okay to run 14.7 as long as your not on boost?
what makes too lean a mixture bad? Is it heat or knock or something else?
Also, is the max amount of boost you can run dependent on internal mods or is it strictly concerned with knock? So... if you could run 24psi w/ no knock on a stock motor, is that okay, or is there another reason not to run that much boost ?
#10
Originally Posted by MalibuJack
Well, there are settings for AFR Target in closed loop, only we haven't found them yet.
But the truth is, there is no reason to really adjust it. Typically if the AFR's arent 14.7 it has to do with trims being out of an adjustable range.
However, we will find this setting as more of the ECU's rom is disassembled.
But the truth is, there is no reason to really adjust it. Typically if the AFR's arent 14.7 it has to do with trims being out of an adjustable range.
However, we will find this setting as more of the ECU's rom is disassembled.
Why would they give them an A/F target then?
#12
Evolved Member
iTrader: (6)
The only reason to do this is to improve gas mileage. I have done it using my LM-1, but I did not really test the results even though I said I would. Here is how to do it if you have an LM-1
https://www.evolutionm.net/forums/sh...67&postcount=3
https://www.evolutionm.net/forums/sh...67&postcount=3
#13
Originally Posted by l2r99gst
Those are the open-loop fueling maps. The question in this thread is about closed-loop fueling.
Eric
Eric
Regardless of open or closed loop. The closed loop function or map, I am guessing, would only have a predetermined stoich target. Not really a map. Are you trying to command a leaner cruise condition? With a narrowband it isn't very reliable. All you have to do is kick the ecu into constant open loop. Very simple. And then work with the map you have. It will still use the modifiers and scalers in the background right? Makes sense to me.
#14
Originally Posted by nj1266
The only reason to do this is to improve gas mileage. I have done it using my LM-1, but I did not really test the results even though I said I would. Here is how to do it if you have an LM-1
https://www.evolutionm.net/forums/sh...67&postcount=3
https://www.evolutionm.net/forums/sh...67&postcount=3
If you really want control of all the fueling, then shut down the closed loop function all together. Run it off the base map
#15
EvoM Guru
iTrader: (5)
AN old trick back in the day of early closed loop was to alter the signal from the O2 sensor, that forces the target AFR to shift...
This really isn't necessary anymore, There **IS** a different table for closed loop target, I think its a single row of values from idle to redline.. I heard someone had actually found it, but has chosen not to share.
I think one of the guys working on the rom on my website (Aktivematrix) may have this info, and I have asked for the info a few days ago. So its possible it may come together. I asked for a few items specific to these adjustments so it may take him some time.
Basically I was looking for all of the injector scaling and closed loop fuel target tables since those are the areas we don't currently have enough data on (or adjustment)
This really isn't necessary anymore, There **IS** a different table for closed loop target, I think its a single row of values from idle to redline.. I heard someone had actually found it, but has chosen not to share.
I think one of the guys working on the rom on my website (Aktivematrix) may have this info, and I have asked for the info a few days ago. So its possible it may come together. I asked for a few items specific to these adjustments so it may take him some time.
Basically I was looking for all of the injector scaling and closed loop fuel target tables since those are the areas we don't currently have enough data on (or adjustment)