accel enrichments - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 07-22-2011, 03:44 PM   #1
I'm Miserable!
Thread Starter
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default accel enrichments

Has anyone setup Enhanced AE ( EAE ) on ms2 for their 1.6 motor?
If you have would you mind showing me your tune or changes to EAE. I just enabled it to see what would happen, stuff didn't go down well.
Techsalvager is offline   Reply With Quote
Old 07-24-2011, 05:34 PM   #2
Newb
 
Join Date: Sep 2010
Posts: 30
Total Cats: 0
Default

you should set the acceleration enrichments to 0.0

and are u running the stock non leaner tps sensor?

if so you should upgrade to a gm tps
turbo4life is offline   Reply With Quote
Old 07-24-2011, 05:58 PM   #3
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

(zack morris's phone)

You still need regular ae for quick throttle stabs.
Braineack is offline   Reply With Quote
Old 07-24-2011, 06:23 PM   #4
I'm Miserable!
Thread Starter
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

variable TPS

when I tried the default EAE I with my current ve table. No issues with normal AE. But with current table once I got near liek 4k seemed like my afrs went high lean.
Techsalvager is offline   Reply With Quote
Old 07-24-2011, 07:04 PM   #5
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

EAE doesn't do anything at steady state.
y8s is offline   Reply With Quote
Old 07-24-2011, 07:17 PM   #6
I'm Miserable!
Thread Starter
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

Quote:
Originally Posted by y8s View Post
EAE doesn't do anything at steady state.
I disagree, EAE does stuff indeed at steady state without engaging normal AE. I was just accelarting slowly and hit into the issue.
What I'm wondering if anyone has tuned EAE for the 1.6 or 1.8
Techsalvager is offline   Reply With Quote
Old 07-24-2011, 07:56 PM   #7
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

(zack morris's phone)

We both have. Ms3 docs have a writeup on the theory.



Eae works with map changes so if it wasnt injeting enough fuel that could be your issue. It actually calculates how much fuel pools on your walls when accelerating and how much gets pulled when lifting. You\'ll tune it for throttle manipulations both on and off. But heavy stabs still require tuning the normal ae to inject enough based on rapid tps changes

Last edited by Braineack; 07-24-2011 at 07:58 PM.
Braineack is offline   Reply With Quote
Old 07-24-2011, 08:42 PM   #8
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

Quote:
Originally Posted by Techsalvager View Post
I disagree, EAE does stuff indeed at steady state without engaging normal AE. I was just accelarting slowly and hit into the issue.
What I'm wondering if anyone has tuned EAE for the 1.6 or 1.8
by steady state i meant "no acceleration"

if your MAP is changing, EAE is working. take the Add To Walls coeff and increase it across the MAP values where you see it go lean when you're accelerating. keep the curve smooth.
y8s is offline   Reply With Quote
Old 07-25-2011, 09:30 AM   #9
I'm Miserable!
Thread Starter
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

Quote:
Originally Posted by y8s View Post
by steady state i meant "no acceleration"

if your MAP is changing, EAE is working. take the Add To Walls coeff and increase it across the MAP values where you see it go lean when you're accelerating. keep the curve smooth.
alright I will give that a go and see what I can do.
Techsalvager is offline   Reply With Quote
Old 07-25-2011, 09:46 AM   #10
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

5th gear on the highway is the best time to tune it. you're just correcting the enrichments based on map changes, so you should be able to manipulate the curve in such away that if you slowly press and hold the throttle the AFR does not change, same when releasing it. It's not about stabs, it's about manipulation.

Since tuning my EAE, I can go WOT in boost and ease off the throttle and see my AFRs stay perfectly flat like I never lifted up. Then I can ease back down and again, boost will rise and AFRs will stay flat.

When off throttle at ilde or shifting, you'll still need regular AE to supply fuel based on your TPS rate, but EAE reduces the amount needed.
Braineack is offline   Reply With Quote
Old 07-25-2011, 10:03 AM   #11
I'm Miserable!
Thread Starter
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

hmmm gotcha so basically with EAE, changes in throttle should make AFRs more steady
Techsalvager is offline   Reply With Quote
Old 07-25-2011, 10:33 AM   #12
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

it's changes in load technically, but the throttle causes that in most cases

the main tables to tune are the pulled-from and adhere-to tables. Basically the code determines a "pool" of fuel that's sitting around, and uses this data while calculating everything else.

If you press the throttle and notice it going lean, then you'll want to increase the stuck-to-walls correction, this is telling the MS that it needs to inject a little more fuel when the load changes at such and such rate, because some of it is adhering to the clyinder walls and not keeping the AFR constant.

Likewise if you lift the throttle, it will assume that fuel is getting pulled from the walls and not inject as much fuel under these lift-rates because it's being sourced from the pool that it has been calculating.

Then you can fine tune the final curves by RPM and CLT temps as needed.


If you don't have Seq. Fuel, using lag compensation should help squeeze better throttle repsonse out of your setup, but I think they updated the code so this was negated and not even available anymore.
Braineack is offline   Reply With Quote
Old 07-25-2011, 10:37 AM   #13
I'm Miserable!
Thread Starter
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

running 3.1.0 and the option is still there and yeah I'm on batch fire still.

Yeah when I said throttle I should of said load. ok I get the idea more so now. wonderful maybe this will help with around town fuel economy after getting it tuned in.
Techsalvager is offline   Reply With Quote
Old 07-25-2011, 06:55 PM   #14
I'm Miserable!
Thread Starter
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

do you guys alter any of the maps past atmo usually?
Techsalvager is offline   Reply With Quote
Old 07-25-2011, 07:06 PM   #15
Junior Member
 
Join Date: Jun 2007
Posts: 411
Total Cats: 0
Default

Quote:
Originally Posted by Braineack View Post
5th gear on the highway is the best time to tune it. you're just correcting the enrichments based on map changes, so you should be able to manipulate the curve in such away that if you slowly press and hold the throttle the AFR does not change, same when releasing it. It's not about stabs, it's about manipulation.

Since tuning my EAE, I can go WOT in boost and ease off the throttle and see my AFRs stay perfectly flat like I never lifted up. Then I can ease back down and again, boost will rise and AFRs will stay flat.

When off throttle at ilde or shifting, you'll still need regular AE to supply fuel based on your TPS rate, but EAE reduces the amount needed.
Could you post a graph showing poorly tuned EAE vs properly tuned EAE?
Greg G is offline   Reply With Quote
Old 07-25-2011, 07:26 PM   #16
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

this is what I'm running now.


Attached Thumbnails
accel enrichments-eae.jpg  
Braineack is offline   Reply With Quote
Old 07-26-2011, 09:16 PM   #17
I'm Miserable!
Thread Starter
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

EAE is sweet. stuff has helped off coming off the throttle and not seeing it drop to 10 afrs, etc. Still tuning it in better.
Techsalvager is offline   Reply With Quote
Old 07-26-2011, 09:54 PM   #18
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

Ken says to use the ATW to tune rising MAP and the SFW to tune decreasing MAP.

Pick an RPM (cruise ~3000 works) and tune as much as you can there in 5th gear.

Then go back and tune other RPMs by slightly tweaking the ATW/SFW RPM maps as you diverge from the one you tuned.

the manual is pretty good on how to tune it.
y8s is offline   Reply With Quote
Old 07-26-2011, 10:02 PM   #19
Elite Member
iTrader: (11)
 
Join Date: Feb 2009
Posts: 2,982
Total Cats: 10
Default

This thread has given me the itch to do some tuning, it sucks that it's so hot.
miatauser884 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Well tuned naturally aspirated example project? asmasm MEGAsquirt 21 09-23-2015 11:53 AM
In what world... curly MEGAsquirt 11 09-22-2015 12:54 PM
VE values too low? compuw22c MEGAsquirt 4 09-12-2015 08:42 PM
New here, saying hi, here's what I'm workin with. SuperSneakySecretSquirrel Meet and Greet 5 09-06-2015 09:30 PM
ME221 Now has Autotune and Long Term Fuel Trim Tables Motorsport-Electronics ECUs and Tuning 0 09-05-2015 09:02 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:34 AM.