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ECMlink need help with upper end Speed density

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enriquez2000

Proven Member
2,408
1,016
Oct 5, 2014
fort collins, Colorado
I have my cruising and idle pretty spot on. Im sure I could smooth out numbers in the VE table some but Im trying to get my upper rpms at least so,ewhat lining up in case i have to move quickly on the highway. I am kinda of clueless how the SD table works.. mafcomp was easy as it was bASICALLY ADD OR REMOVE PERCENT BASED ON wbFACTOR.

\I would love any help I can get.. I do a quick little run and I go real lean then to way rich...
 

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I have my cruising and idle pretty spot on. Im sure I could smooth out numbers in the VE table some but Im trying to get my upper rpms at least so,ewhat lining up in case i have to move quickly on the highway. I am kinda of clueless how the SD table works.. mafcomp was easy as it was bASICALLY ADD OR REMOVE PERCENT BASED ON wbFACTOR.

\I would love any help I can get.. I do a quick little run and I go real lean then to way rich...
here is my intitial attempt at a change but cant test ot yet.. opinions?
 

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get in 3rd gear on a long road, feather it down to the lowest speed you possibly can, like 20mph, then go WOT to 4500rpm.
you're table is pretty disgusting looking, so i'll clean it up and tune it to 4500, then we'll go from there.
 
get in 3rd gear on a long road, feather it down to the lowest speed you possibly can, like 20mph, then go WOT to 4500rpm.
you're table is pretty disgusting looking, so i'll clean it up and tune it to 4500, then we'll go from there.
Im in an auto so those kind of WOT pulls are almost impossible.. The table on there is the one that was in the ecu minus the tweaking I did to get the car to idle and cruise properly.. I know there is smoothing that needs done in cruising but it did surprisingly well after just the 30min cruise/idle tune i through at it. Any help is appreciated.. I got real good at mafcomp but this isnt as easy as all that.

Ill be at work all day. Not sure if there is anything you can do with what I uploaded. I will do my best to do a 4500rpm pull on the way home and upload that. Tuning is the only time I wish I had a manual with this car.
 
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whatever you can do to stop it from doing a kickdown, if it'll never see that low of a wot rpm, then so be it.

maybe in an auto you can feather it up to 100% throttle without a kickdown from a low speed.

and do the tpsadjust, because you're "light pull" wasn't 100% throttle
 
whatever you can do to stop it from doing a kickdown, if it'll never see that low of a wot rpm, then so be it.

maybe in an auto you can feather it up to 100% throttle without a kickdown from a low speed.

and do the tpsadjust, because you're "light pull" wasn't 100% throttle
It wasnt a wot pull... i tried one that ill upload when i get home.
 
here is what I was able to get... pull is at 133 seconds... when i tuned my maf it worked better if i just wot from a dead stop out of overdrive...
 

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I use this to get my AFRatioEst to line up with my logged wideband reading - this is from 5622 rpm of your pull at 136 sec. LC1WB value (10.1 afr) / AFRatioEst afr (12.0 afr) x current SD table cell you are working on (96.5). (10.1 / 12 ) x 96.5 = 81.21 new sd cell value. Input this value into the load cell you are working on, rounding up or down by .5 This takes forever but it has worked for me. If your SD values go over 110, you will have to change your global fuel value to more fuel.
 
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I use this to get my AFRatioEst to line up with my logged wideband reading - this is from 5622 rpm of your pull at 136 sec. AFRatioEst value (12.0 afr) / LC1 logged afr (10.1 afr) x current SD table cell you are working on (96.5). (12.0 / 10.1 ) x 96.5 = 114.65 new sd cell value. Input this value into the load cell you are working on. This takes forever but it has worked for me. If your SD values go over 110, you will have to change your global fuel value to more fuel.
Wouldnt i want to pull fuel from that cell? Higher numbers increase the fuel dont they?
 
I tried to clean it up your VE table a little, and tuned your wot part so far for your target AFR. Load that up and give me that same exact pull, but to 6500 this time.
 

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ok here is a pull.... i let out early from afrs going super rich.
 

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ok, try this VE table, and duplicate the same pull above to verify the tune. then we'll get to a redline pull :)
 

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Will load it in tonight for drive home.. my middle areas are a bit rich if i quick throttle around cars but i know how to adjust that.

Im having a hard time with this car killing o2 sensors. Right after that pull yesterday it went whacko on me and gave me the e8 of death code. Hoping that leaner afrs from this tune will help.
 
There is a youtube video that shows how to dial this in with an excel spreadsheet. I used it for my sd table and it worked great. automatically calculates new fuel numbers
 
now i'm confused, you have these weird afrest spikes, and i don't see what would cause it. they were not in the previous log...
 
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