Air Temp Correction - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 02-14-2010, 02:17 PM   #1
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Dec 2007
Location: Seven Valleys, PA
Posts: 639
Total Cats: 11
Default Air Temp Correction

what does your airtemp correction look like? I think that i am having some issues, because i am going obnoxiously lean when the intake is hot (like coming back to the car after grocery shopping). i zeroed out my temp correction, so shouldn't it be going rich when hot?

I used to have a similar such problem before, and it turned out to be a faulty map sensor. I hope that this new GM 3bar is not bad as well...

Any ideas???
swimming108 is online now   Reply With Quote
Old 02-17-2010, 10:55 PM   #2
Junior Member
 
Join Date: Jul 2007
Location: Mundelein, IL
Posts: 59
Total Cats: 0
Default

I'm having that identical problem. Runs like **** after a warm restart for a couple of minutes, then smooths out. First time it happened to me, I was also grocery shopping. Coincidence? I think not! My car knows I hate grocery shopping.

Engine is still mostly stock except for usual things to make Adaptronic run.
micagreenmachine is offline   Reply With Quote
Old 02-17-2010, 11:02 PM   #3
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,174
Total Cats: 2,575
Default

Ditto. My car is fine in cold/warm/and semi-hot weather and has been behaving good lately.


ONE TIME though a couple weeks ago I was stuck in bumper to bumper traffic for about an hour. For a good 30 minutes it was fine, then the fans started cycling, it was semi fine for another 15 minutes or so, then I guess it started getting REALLY hot and went INSANLY LEAN at idle. I'm talking 16-17 when my normal afr's are all the way in the 11's-12's at normal idle.

As soon as I got out of traffic and started moving again, it was FINE. And coolant temps didn't go past the norm either so I know my cooling system is fine.


I guess we'll just have to go through all the sensors one by one and re-configure them properly cause all the base maps and calibrations provided by the Adaptronic have so far been WAY OFF.


******* bullshit
18psi is offline   Reply With Quote
Old 02-17-2010, 11:26 PM   #4
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Dec 2007
Location: Seven Valleys, PA
Posts: 639
Total Cats: 11
Default

well, at least i know that i am not alone now. I will try some data logs this weekend to see if i can make any sort of sense of the situation.
swimming108 is online now   Reply With Quote
Old 04-12-2010, 10:00 PM   #5
Junior Member
 
Join Date: Jul 2007
Location: Mundelein, IL
Posts: 59
Total Cats: 0
Default

I think I've got my issue licked... It got pretty warm here about a week ago and my car was impossible to drive once the engine got hot. I had the temp sensor right next to the intake manifold and noticed it was super hot to the touch when I pulled over to let the engine bay cool off.

I put my stock intake back in and put the GM temp sensor in the stock location with a gas pipe nut and washer to seal the gap. Looks like it was just a heat-soak issue and/or MAT temps too high (sucky old monster intake eating a lot of hot air).

It hasn't been that warm again here yet, but I no longer have the rough running and crazy AFR's after a hot restart.
micagreenmachine is offline   Reply With Quote
Old 04-12-2010, 10:07 PM   #6
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,775
Total Cats: 1,106
Default

Definitely check out where you have your IAT sensor placed. If it is right behind the radiator then it could be heatsoak and moving the IAT sensor down to right after the intercooler could help you out.
shuiend is offline   Reply With Quote
Old 04-12-2010, 10:59 PM   #7
Senior Member
iTrader: (3)
 
Join Date: Aug 2005
Location: Gig Harbor, WA
Posts: 504
Total Cats: 3
Default

Quote:
Originally Posted by 18psi View Post
I guess we'll just have to go through all the sensors one by one and re-configure them properly cause all the base maps and calibrations provided by the Adaptronic have so far been WAY OFF.


******* bullshit
You guys do realize that Adaptronic provides no maps at all, right? The only reason there maps is because Travis sends out maps he's found/received and his own. Its not like FM who's spent the last decade getting a good tune. I'm sure the maps he sends out will get better once he starts doing installs and gets his hands on more cars.
TurboRoach is offline   Reply With Quote
Old 04-12-2010, 11:53 PM   #8
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Dec 2007
Location: Seven Valleys, PA
Posts: 639
Total Cats: 11
Default

i should go visit him and let him tweak my car a bit. he is only a couple hundred miles away...right
swimming108 is online now   Reply With Quote
Old 04-12-2010, 11:56 PM   #9
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Dec 2007
Location: Seven Valleys, PA
Posts: 639
Total Cats: 11
Default

my iat sensor is down near the wheel well just after the intercooler exit. so i doubt the heat soak. my ait correction is currently set to make the car richer as temps increase. this seems to be the opposite of everyone else, but it is working
swimming108 is online now   Reply With Quote
Old 04-13-2010, 12:22 AM   #10
Senior Member
iTrader: (3)
 
Join Date: Aug 2005
Location: Gig Harbor, WA
Posts: 504
Total Cats: 3
Default

Sure why not

I'm using the air temp correction that y8s posted a while back.
TurboRoach is offline   Reply With Quote
Old 04-13-2010, 07:36 AM   #11
Senior Member
 
Join Date: Nov 2007
Location: somewhere in NoVA
Posts: 550
Total Cats: -1
Default

Yeah, I have the same problem as well... for sure the heatsoak is hitting me badly. I have the BEGi intercooler kit and my IAT is located 3" off of the IC outlet... The temps will go super hot in stop and go traffic leaving me lean and "bucking" most of the time.

Two things i have noticed is that the DIY Autotune sensor I bought is all metal; so I am thinking about isolating it somehow. The other thing I remember is that if this becomes enough of a problem that the IAT sensor can be ignored as I recall. Long-term would be maybe a new sensor that is not metal and so it will only see the air temp?

Swimming hit on something good with inverting the temperature corrections to make it rich instead of lean. I may just try that later...

logs.zip

Cheers,
Prospero
Prospero 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
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Moroso Air Oil Separator Catch Can Aroundcorner Miata parts for sale/trade 2 10-01-2015 04:20 PM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 12:35 PM.