MAT Correction - Page 2 - 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 02-01-2012, 12:33 PM   #21
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,327
Total Cats: 1,926
Default

Quote:
Originally Posted by Braineack View Post
But I probably wouldn't start by opening up the software and looking at the dropdown where the MAT Corrections parameters reside. I certainally then wouldn't see one labled "MAT Correction value." And I wouldn't open that dialouge window and see that I can input a value from 50-100% to change the scaling of the ideal gas air density corrections.
I don't have a copy of TS loaded on the PC that I'm typing this from, so I can't check right now, however I don't believe that the MS1 has this feature.

fastivab6tg25mr, I might try changing from "Corrected" to "Normal correction" and see if that helps.

Otherwise, the only solution I can think of for an MS1 would be to switch "CLT-related density", use IAT, over-ride the RPM taper, and enter a map which is inverse of the normal correction map at half-scale.
Joe Perez is offline   Reply With Quote
Old 02-01-2012, 12:37 PM   #22
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

Quote:
Originally Posted by FatKao View Post
What about doing in hardware what you can't do in software? Use a space MS output to trigger a circuit to switch from an ambient air sensor to an in-intake sensor?
Tried that.

I had two AIT sensors at one point. The second under the driver side fender, with a little computer fan blowing on it. I'd use a relay with some RPM + TIME? (I can't rember) to trigger from one to the other.

doesn't really help, still gets hot under the hood...the issue is the aggressive code that pulls way too much fuel at any temp abouve 85F

Quote:
Originally Posted by Joe Perez View Post
I don't have a copy of TS loaded on the PC that I'm typing this from, so I can't check right now, however I don't believe that the MS1 has this feature.

Otherwise, the only solution I can think of for an MS1 would be to switch "CLT-related density", use IAT, over-ride the RPM taper, and enter a map which is inverse of the normal correction map at half-scale.
This is what I'm talking about. Air Density table switch to AIT, with the start/end correction RPM points set to like 2500 and 3000 respectively.

same function as the MAT corrections table in MSII and MSII.
Braineack is offline   Reply With Quote
Old 02-01-2012, 01:00 PM   #23
Junior Member
 
Join Date: Jan 2011
Location: sacramento ,ca
Posts: 402
Total Cats: 46
Default

thanks so much. i guess i just confused myself looking for something that wasnt there.
fastivab6tg25mr is offline   Reply With Quote
Old 02-01-2012, 01:06 PM   #24
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,327
Total Cats: 1,926
Default

Quote:
Originally Posted by Braineack View Post
This is what I'm talking about. Air Density table switch to AIT, with the start/end correction RPM points set to like 2500 and 3000 respectively.

same function as the MAT corrections table in MSII and MSII.
I was just clarifying that in MS1, there's no way to "open that dialouge window and see that I can input a value from 50-100% to change the scaling of the ideal gas air density corrections."

Us old-schoolers don't have none of this hoity-toity percentage scaling.
Joe Perez is offline   Reply With Quote
Old 02-01-2012, 01:11 PM   #25
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

ohhh. yeah well that part is trivial. I want the decay.
Braineack is offline   Reply With Quote
Old 02-01-2012, 01:25 PM   #26
Junior Member
 
Join Date: Jan 2011
Location: sacramento ,ca
Posts: 402
Total Cats: 46
Default

Quote:
Originally Posted by Joe Perez View Post
Us old-schoolers don't have none of this hoity-toity percentage scaling.
not old school... just poor...lol... i cant wait for some extra cash to build an MS3X. i want sequential fuel and spark.
fastivab6tg25mr is offline   Reply With Quote
Old 02-10-2012, 11:53 AM   #27
Junior Member
 
Join Date: Jan 2011
Location: sacramento ,ca
Posts: 402
Total Cats: 46
Default

finally got around to putting in my 1000s from five0 so im setting up my corrections and i can't seem to get the CLT gauge to chane to the MAT even after i went into the .ini and changed it.

do i have to reload the firmware or something?
fastivab6tg25mr is offline   Reply With Quote
Old 02-10-2012, 12:03 PM   #28
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

MSI
Braineack is offline   Reply With Quote
Old 02-10-2012, 12:23 PM   #29
Junior Member
 
Join Date: Jan 2011
Location: sacramento ,ca
Posts: 402
Total Cats: 46
Default

but its all that i have :'(
fastivab6tg25mr is offline   Reply With Quote
Old 02-11-2012, 11:46 AM   #30
Junior Member
 
Join Date: Jan 2011
Location: sacramento ,ca
Posts: 402
Total Cats: 46
Default

does anyone have an idea of what im doing wrong? do i have to reload the firmware in order for the clt corrections to turn into mat corrections? i was trying to use the lil green ball as a reference like the box says but it is still following clt values instead of the mat values i set it to.
fastivab6tg25mr is offline   Reply With Quote
Old 02-11-2012, 03:19 PM   #31
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

and it's set to AIT under advanced? the green line should be following whatever that is set to, regardless of what the gauge displaying in that window shows.
Braineack is offline   Reply With Quote
Old 02-11-2012, 08:57 PM   #32
Junior Member
 
Join Date: Jan 2011
Location: sacramento ,ca
Posts: 402
Total Cats: 46
Default

its set to IAT but its following CLT thats why im so confused. any ideas?
fastivab6tg25mr is offline   Reply With Quote
Old 05-25-2012, 10:12 AM   #33
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,684
Total Cats: 1,561
Default

MS1 user here. I was able to remedy the hot starting lean condition using the coolant related air density table adjustments table and it's working pretty good now. Thanks for that help.

Question- When constantly in boost at the track on a very hot day in Miami, my AFRs were getting leaner in boost, presumably due to high AITs. Is the MS1 pulling fuel due to high AITs just like on hot starts? Can I compensate for or prevent this?
sixshooter is online now   Reply With Quote
Old 05-25-2012, 10:19 AM   #34
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

well on the MSI you have a decay to turn off the CLT-Based corrections after X rpm, probably set around 2500RPM, so the MS starts pulling fuel again based on the MAT. you may want to increase that value a little.
Braineack is offline   Reply With Quote
Old 05-25-2012, 12:39 PM   #35
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,684
Total Cats: 1,561
Default

Quote:
Originally Posted by Braineack View Post
well on the MSI you have a decay to turn off the CLT-Based corrections after X rpm, probably set around 2500RPM, so the MS starts pulling fuel again based on the MAT. you may want to increase that value a little.
Increase which value, the decay RPM or how it pulls fuel related to the MAT? Is that the curve editor thing I read about?
sixshooter is online now   Reply With Quote
Old 05-25-2012, 12:57 PM   #36
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,684
Total Cats: 1,561
Default

FWIW, my car was pretty dialed in with autotune to run 12.2 AFRs at 140kpa and 11.5 at 170kpa between 4000-7000RPM.

And I was reading about 13.4 AFR at 6-7psi in the same RPM range on the hot track with AIT's above 105*F. Too much difference when AIT's go up.

Last edited by sixshooter; 05-25-2012 at 04:23 PM.
sixshooter is online now   Reply With Quote
Old 05-25-2012, 11:35 PM   #37
Junior Member
 
Join Date: Aug 2009
Location: Lake Jackson, TX
Posts: 161
Total Cats: 3
Default

Quote:
Originally Posted by fastivab6tg25mr View Post
its set to IAT but its following CLT thats why im so confused. any ideas?
You have to open up the project ini file in a text editor and change one of the settings to switch the gauge and table to display MAT rather than CLT. For whatever reason, it doesn't automatically switch when you choose MAT vs CLT and there is no drop-down to switch it.

http://www.msextra.com/forums/viewto...=25788#p186868
Quote:
Originally Posted by justins71 Wed May 21, 2008 2:48 pm
I had that problem - and tried to change it to MAT correction, but it was still reading from clt temp. Had to go into the .ini file and change the line:

[CurveEditor]
curve = clt_IATCorrC, "Coolant corrected Air Density, see Settings", 9
topicHelp = airdenHelp
columnLabel = "Temp", "Offset"
xBins = IATCTemp, mat <==change this, previously 'clt'
yBins = IATCorS
gauge = matGauge <== also change to this if it doesn't say this already


Hope this helps!
jnshk is offline   Reply With Quote
Old 05-26-2012, 06:47 PM   #38
Newb
 
Join Date: Apr 2010
Posts: 8
Total Cats: 0
Default

Just tried the above, found the curve editor in C:\Program Files\EFIAnalytics\TunerStudioMS_beta\config\ecuDe f\MSExtra format hr_10.ini manged to save it but the iat correction table is still showing coolant corrected. What am i doing wrong? Surely it should be iat corrected?


Thanks in advance for any help.
Attached Thumbnails
MAT Correction-iateditor.jpg   MAT Correction-iattables.jpg  
chacer is offline   Reply With Quote
Old 05-26-2012, 06:53 PM   #39
Junior Member
 
Join Date: Aug 2009
Location: Lake Jackson, TX
Posts: 161
Total Cats: 3
Default

Sorry, I should have clarified: You need to change it in your project ini file, not the firmware ini file. Look for the mainController.ini file in the "projectCfg" folder.
jnshk is offline   Reply With Quote
Old 05-27-2012, 04:22 PM   #40
Newb
 
Join Date: Apr 2010
Posts: 8
Total Cats: 0
Default

Quote:
Originally Posted by jnshk View Post
Sorry, I should have clarified: You need to change it in your project ini file, not the firmware ini file. Look for the mainController.ini file in the "projectCfg" folder.
You guys on here are awesome!!!!!!!!!!!! Managed to find the correct folder & edit the .ini file. It is now displaying mat & not clt
All i need to do now is work out what offsets to use & all will be great again in my eunos world.
thanks guys.
Rob
chacer is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Raleigh: Fiberglass headlight scope, 1.6L ECU, AFM, Hardtop latches, more bigmackloud Miata parts for sale/trade 13 09-22-2017 01:34 PM
Need help - Stock Balancer and Fastforward overlay pulleys Frank_and_Beans Supercharger Discussion 13 09-12-2016 09:17 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
1995 Miata parts, coilover springs, PatCleary Miata parts for sale/trade 9 09-11-2015 08:53 PM
2009 Subaru WRX Hatchback - Pearl White - 83k miles - $16999 Braineack Cars for sale/trade 3 09-04-2015 03:12 PM


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 12:37 AM.