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Old 11-15-2012, 01:39 AM   #1
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Default EAE tuning

Does anyone with good EAE tuning care to share it?
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Old 11-15-2012, 10:53 AM   #2
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it's a slow, iterative process but here's what I got:




heavy disclaimer:
if your fuel map isn't perfect, you'll have a hard time tuning it.

to start, turn off regular throttle pump AE or set the minimum TPSdot to like 200 and do some cruising around town. watch the EAE and AFR / AFR Target. The EAE should keep things in line.

I reduced most of my slow throttle movement AE once I got the EAE dialed pretty well.

Car is smooth off the line now and doesn't buck when I lift on the highway.
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Old 11-15-2012, 12:19 PM   #3
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Thanks. I have some bucking problems when cruising for school children in 20mph zones in 2nd and 3rd and I'm not sure if its VVTuner related or something else. I'm at my whit's end.
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Old 11-15-2012, 05:42 PM   #4
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This is my current goal. I will give it a go and see if I can add anything after I get it sorted. The Msextra manual leaves a lot to the imagination. You would think that the EAE could be self-tuning like VEAL.
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Old 02-09-2013, 03:31 PM   #5
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Man, this stuff is hard to get right. I see a general improvement, but I'm trying to balance accuracy with free-revving. How do I need to know if I should focus on added vs sucked?
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Old 02-09-2013, 06:06 PM   #6
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drive on highway in 5th gear, slowly manipulate throttle. that's where EAE comes into play; to keep AFRs in check when manipulating throttle. As a general rule, you increase adhere to wall if you're too lean on accel, and increase sucked from wall if too lean on decel. IIRC.

anywhere else, like on/off throttle, youll need to add fuel with the accel-pump (if ms3) or accel-wizard if ms2.
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Old 02-09-2013, 06:12 PM   #7
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Quote:
Originally Posted by Braineack View Post
drive on highway in 5th gear, slowly manipulate throttle. that's where EAE comes into play; to keep AFRs in check when manipulating throttle. As a general rule, you increase adhere to wall if you're too lean on accel, and increase sucked from wall if too lean on decel. IIRC.

anywhere else, like on/off throttle, youll need to add fuel with the accel-pump (if ms3) or accel-wizard if ms2.
I think it's spot on right now on my MS2 car. When I rev-match on downshifts, it still goes too fat. During all other conditions the AFR snaps to target. Time to give up?

Time to read-up on accel-pump.
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Old 02-09-2013, 06:14 PM   #8
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My AFRs always peg pretty fat momentarily when I lift lift regardless, I dont think you can ever help that. I dunno. if i get aggressive with the decel cut, then it jerks like crazy when I lift and i dont impress the bois.
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Old 02-09-2013, 06:48 PM   #9
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I will give up then, thanks for the help.
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Old 02-09-2013, 06:51 PM   #10
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I never found tuning while free reving to be much help. I stopped anally chasing afr targets and went on how the car felt. A combination of the two works fine.

I follows brains advice about 5th gear on highway. Tune for 3k, then adjust the rpm curve once 3k looks good ay different loads
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Old 02-09-2013, 08:18 PM   #11
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The car feels better in one area I had tuning problems with, but God damn the AFR targets are spot on all the time. I suspect a significant increase in city fuel economy.
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Old 02-10-2013, 02:37 PM   #12
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Here's what I came up with. AFR targets are shockingly good. I think there is slightly more success to be had when I adjust RPM correction.

Just to be clear,
Increase correction value for adhere to walls increases PW (duh)
Increase correction value for sucked from walls decreases PW

Right? The algorithm could have been written either way for sucking.

Also:
Is "fuel sucked from walls" activated when I release throttle position, or does it only function off KPA increase?
Is "decel fuel amount" under the Accel wizard active TPS rates under the set threshold? (My TPS threshold is now 300%/s which is very high)

Who expects better fuel economy from this? I really want to get this car 400 miles on a tank at 80mph.
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File Type: msq EaeTestRpm.msq (102.8 KB, 69 views)
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Old 02-10-2013, 02:45 PM   #13
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the code is constantly calculating a "puddle" of fuel.

so it wants to know how much sticks to the wall when you inject, and how much gets sucked off when you lift. once you can kinda wrap your head around that the rest makes sense. EAE is always working.
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Old 02-10-2013, 02:50 PM   #14
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Quote:
Originally Posted by Braineack View Post
the code is constantly calculating a "puddle" of fuel.

so it wants to know how much sticks to the wall when you inject, and how much gets sucked off when you lift. once you can kinda wrap your head around that the rest makes sense. EAE is always working.
Thanks., I understand we are working with fuel sticking to walls. I do not understand if an increase in the "sucking value" means an increase or decrease in PW. I think a larger value means less PW, but I want to be certain. I could have just stumbled into good results.

How many "professional tuners" use EAE?
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Old 02-10-2013, 02:56 PM   #15
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Wait a second. Is "fuel sucking" not active after accel events without a drop in KPA? I was under the impression that if I say, went WOT and could manage to hold on to not brown-out my shorts with 140whp, that the sucking algorithm would correct for that addition fuel puddled during accel as an answer to transient fuel conditions.
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Old 02-10-2013, 09:20 PM   #16
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increasing sucked from walls means more fuel has been sucked from the walls and is available for combustion the MS3 will decrease overall PW because less is needed.

increasing added to walls means more fuel has been added to the walls and is no longer available for combustion and the MS3 will increase overall PW because more is needed.

remember both are transient but always active. if you're cruising, the system will maintain a balance between sucking and adding.

when you accelerate, the system adds or sucks based on the instantaneous value and is aware of throttle changes.

in my experience, the most important value to change is the one that represents the starting point. i.e. if you are cruising at 38 kPa and stab the gas, that is where Add-to-wall adjustments will make the most contribution. when you are cruising at 70 kPa and lift, that is where the sucked-from-walls will make the most difference. to a lesser degree, all points between the start and end of the accel period will make some difference and you'll want to show the logged graphical values of EAE, TPSACC, and MAPACC to know where you need to tweak.
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Old 02-11-2013, 12:24 AM   #17
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I was under the impression

adhere to wall is when pedal is pressed
sucked from wall when pedal is lifted

But both happen during very small/slow throttle manipulations
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Old 02-11-2013, 01:36 PM   #18
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Quote:
Originally Posted by djp0623 View Post
I was under the impression

adhere to wall is when pedal is pressed
sucked from wall when pedal is lifted

But both happen during very small/slow throttle manipulations
part A is correct.

part B is not necessarily. I had pretty fast response from the EAE system
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Old 02-13-2013, 07:33 PM   #19
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Quote:
Originally Posted by y8s View Post
increasing sucked from walls means more fuel has been sucked from the walls and is available for combustion the MS3 will decrease overall PW because less is needed.

increasing added to walls means more fuel has been added to the walls and is no longer available for combustion and the MS3 will increase overall PW because more is needed.

remember both are transient but always active. if you're cruising, the system will maintain a balance between sucking and adding.

when you accelerate, the system adds or sucks based on the instantaneous value and is aware of throttle changes.

in my experience, the most important value to change is the one that represents the starting point. i.e. if you are cruising at 38 kPa and stab the gas, that is where Add-to-wall adjustments will make the most contribution. when you are cruising at 70 kPa and lift, that is where the sucked-from-walls will make the most difference. to a lesser degree, all points between the start and end of the accel period will make some difference and you'll want to show the logged graphical values of EAE, TPSACC, and MAPACC to know where you need to tweak.
Thanks, that's exactly what I needed to read.
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