Iat - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 01-22-2009, 11:14 AM   #1
Elite Member
Thread Starter
iTrader: (46)
 
Stein's Avatar
 
Join Date: Dec 2007
Location: Nebraska
Posts: 4,812
Total Cats: 138
Default Iat

The plastic IAT in the airbox on the NB's--is it "good enough" to use with most EMU's? The new EMU that I am looking at requires the use of an IAT. Do I need to/want to upgrade to the GM IAT?
Stein is offline   Reply With Quote
Old 01-22-2009, 12:40 PM   #2
Hear me Meow
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 1,994
Total Cats: 13
Default

I know for the NAs, the stock unit is restrictive and would measure temperature before the turbo and intercooler. I would say get the GM sensor and put it in the ideal location so it won't restrict airflow, and it will report an appropriate temperature.

If I'm wrong, I'm sure I'll be corrected.
skidude is offline   Reply With Quote
Old 01-22-2009, 12:45 PM   #3
Elite Member
Thread Starter
iTrader: (46)
 
Stein's Avatar
 
Join Date: Dec 2007
Location: Nebraska
Posts: 4,812
Total Cats: 138
Default

Quote:
Originally Posted by skidude108 View Post
I know for the NAs, the stock unit is restrictive and would measure temperature before the turbo and intercooler. I would say get the GM sensor and put it in the ideal location so it won't restrict airflow, and it will report an appropriate temperature.

If I'm wrong, I'm sure I'll be corrected.

No, you are right. I did some more searching and found that the GM IAT after the IC is the way to go.
Stein is offline   Reply With Quote
Old 01-22-2009, 01:11 PM   #4
Elite Member
iTrader: (12)
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,575
Total Cats: 11
Default

The GM iat sensor is an open element, which means it reacts quickly to temp changes, something you need in a boosted car. I doubt the stock sensor is open, so yeah go with the gm one.

I put it right before the throttle body, some ppl put it in the intake mani... as close to the cylinders as you can bacially.
cardriverx is offline   Reply With Quote
Old 01-22-2009, 01:12 PM   #5
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,186
Total Cats: 2,583
Default

so are you going with the greddy emanage ultimate?
18psi is offline   Reply With Quote
Old 01-22-2009, 01:13 PM   #6
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,797
Total Cats: 248
Default

It's really easy to setup MS to read an open element GM sensor. Put it after the IC up in the front of the car so it doesn't heat soak.
patsmx5 is offline   Reply With Quote
Old 01-22-2009, 01:35 PM   #7
Elite Member
Thread Starter
iTrader: (46)
 
Stein's Avatar
 
Join Date: Dec 2007
Location: Nebraska
Posts: 4,812
Total Cats: 138
Default

Quote:
Originally Posted by 18psi View Post
so are you going with the greddy emanage ultimate?
It's really killing you, isn't it?I'm looking at going with the Adaptronic from Travis. Waiting for a phone call to discuss some details. Somebody has to try it in the US.

https://www.miataturbo.net/forum/t25299/
Stein is offline   Reply With Quote
Old 01-22-2009, 01:38 PM   #8
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,186
Total Cats: 2,583
Default

OMG DO IT!!!!!!!!!!!!!!

lead the way for us, kind sir
18psi is offline   Reply With Quote
Old 01-24-2009, 11:16 PM   #9
Newb
 
Join Date: Jan 2009
Posts: 30
Total Cats: 0
Default

Quote:
Originally Posted by patsmx5 View Post
It's really easy to setup MS to read an open element GM sensor. Put it after the IC up in the front of the car so it doesn't heat soak.

Its easy cause its already programmed for GM sensors :P

Quote:
Originally Posted by cardriverx View Post
The GM iat sensor is an open element, which means it reacts quickly to temp changes, something you need in a boosted car. I doubt the stock sensor is open, so yeah go with the gm one.

I put it right before the throttle body, some ppl put it in the intake mani... as close to the cylinders as you can bacially.

Although it may not make a big difference but putting it on the Intake Manifold like pat said can cause Heat Soak since the Manifold would take longer to dissipate the heat as oppose to on the intercooler Piping. I put mine a few inches in front of the TB so that MS would get the most accurate readings before it enters the engine.
pumaking is offline   Reply With Quote
Old 01-24-2009, 11:23 PM   #10
Elite Member
iTrader: (5)
 
Atlanta93LE's Avatar
 
Join Date: Sep 2006
Location: Marietta, GA
Posts: 2,198
Total Cats: 1
Default

Mine heatsoaks like a bitch. If I stop somewhere for a quick stop, I can't get the car restarted without popping the hood and airing out the sensor. I'm going to be moving it to immediately post-IC when I install my next IC setup.
Atlanta93LE is offline   Reply With Quote
Old 01-24-2009, 11:31 PM   #11
Newb
 
Join Date: Jan 2009
Posts: 30
Total Cats: 0
Default

Quote:
Originally Posted by Atlanta93LE View Post
Mine heatsoaks like a bitch. If I stop somewhere for a quick stop, I can't get the car restarted without popping the hood and airing out the sensor. I'm going to be moving it to immediately post-IC when I install my next IC setup.

Whats your intake setup?

This might not help but figured I'd mention it. Before I switched to a true Cold Air Intake setup I just had a air filter on the turbo. Whenever I come to a stop my intake temps would climb to 120-140*F this takes about 4mins for it to climb up, when driving it would be a few degrees above Ambient Temp.


When I installed my true cold air meaning the filter is outside of the engine bay near the driver side tire/bumper area, my temps dropped a significant amount for example the same idle/stop temps never reached over 110*F and during cruising it actual reached Ambient Temps.
pumaking is offline   Reply With Quote
Old 01-24-2009, 11:56 PM   #12
Elite Member
iTrader: (5)
 
Atlanta93LE's Avatar
 
Join Date: Sep 2006
Location: Marietta, GA
Posts: 2,198
Total Cats: 1
Default

Filter is behind the driver's headlight with a TSI open to it. Never seen above ~15-20*F above ambient except during boosted runs. PRoblem is after turning the car off and then coming back to it in ~5-10 minutes. Stopping for gas sometimes causes the problem. The sensor heatsoaks and I can't start the car without popping the hood and letting it cool down. It helps if I physically remove the IAT from the intake and wave it around. /jack
Atlanta93LE is offline   Reply With Quote
Old 01-25-2009, 12:00 AM   #13
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,797
Total Cats: 248
Default

Yes, IAT sensor heatsoak is a problem, even if it's the open element. Best solution, as mentioned, is to keep it away from heat. Mine's as far away from the engine as possible and it does fine now. Park it hot and 15 minutes later fire it up and my AIT sensor might be 20*F over ambient. Nothing major like when it was by the TB.
patsmx5 is offline   Reply With Quote
Old 01-25-2009, 08:21 PM   #14
Hear me Meow
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 1,994
Total Cats: 13
Default

Why did they make the whole thing out of brass? Was plastic too fragile or something? It would solve the heatsoak problem.
skidude is offline   Reply With Quote
Old 01-25-2009, 11:15 PM   #15
Newb
 
Join Date: Jan 2009
Posts: 30
Total Cats: 0
Default

Quote:
Originally Posted by skidude108 View Post
Why did they make the whole thing out of brass? Was plastic too fragile or something? It would solve the heatsoak problem.


Well depending on which GM IAT sensor you get some are All Plastic, Half Brass/Half Plastic, and all brass.


Half Plastic Half Brass





All Brass




All Plastic

pumaking is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Missing/knock at idle, can someone point me in the right direction? Mikel MEGAsquirt 4 09-28-2015 05:46 PM
IAT on MS3 gsyk59 MEGAsquirt 2 09-20-2015 05:54 PM
ME221 Now has Autotune and Long Term Fuel Trim Tables Motorsport-Electronics ECUs and Tuning 0 09-05-2015 09:02 AM
IAT sensor problem? richyvrlimited MEGAsquirt 4 10-03-2007 05:23 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 07:00 PM.