Manifold Air Temp - 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 07-29-2007, 08:03 PM   #1
Junior Member
Thread Starter
 
emerilnut's Avatar
 
Join Date: Nov 2005
Location: Duluth, GA
Posts: 92
Total Cats: 0
Default Manifold Air Temp

Manifold air temp shouldn't be reading -14* F right?

Where should I look to fix the problem?
emerilnut is offline   Reply With Quote
Old 07-29-2007, 08:08 PM   #2
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

IAT sensor wiring.
Ben is offline   Reply With Quote
Old 07-29-2007, 08:19 PM   #3
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

What IAT sensor, stock or GM? Could have wrong sensor for the easytherm settings you're using.
cjernigan is offline   Reply With Quote
Old 07-29-2007, 08:19 PM   #4
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

Stan, if you want to I'll help you knock it out tonight. Right now. 404.xxx.xxxx

CJ, it's the PNP. No easytherm for us. :-)

Last edited by Ben; 07-30-2007 at 11:05 AM.
Ben is offline   Reply With Quote
Old 07-29-2007, 08:24 PM   #5
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

Understandable. Get him to fix his sig so i remember in the future. Then again, being the PnP i bet there won't be a future. Looks like i need to live around atlanta. Not enough people near me in TN with megasquirt going on besides Al.
cjernigan is offline   Reply With Quote
Old 07-29-2007, 09:35 PM   #6
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

yeah and even fewer in alaska hurry up and get back chad
magnamx-5 is offline   Reply With Quote
Old 07-29-2007, 10:22 PM   #7
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

Crisis resolved. Stupid JRSC IAT resistor fueling.
Ben is offline   Reply With Quote
Old 07-29-2007, 11:44 PM   #8
Junior Member
Thread Starter
 
emerilnut's Avatar
 
Join Date: Nov 2005
Location: Duluth, GA
Posts: 92
Total Cats: 0
Default

Quote:
Originally Posted by Ben View Post
Crisis resolved. Stupid JRSC IAT resistor fueling.
Yeah, how stupid is that? I didn't even think of it... it took the phone call with Ben to remember it. It was fixed in less than 5 minutes....
emerilnut is offline   Reply With Quote
Old 07-30-2007, 04:39 AM   #9
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

no way he had the old resistor trick going on to make him richer :gay: damn i almost forgot people did that good times
magnamx-5 is offline   Reply With Quote
Old 07-30-2007, 09:13 AM   #10
Supporting Vendor
iTrader: (5)
 
Join Date: Jun 2006
Location: Duluth, GA 30097
Posts: 798
Total Cats: 0
Default

Darn Band-aids

Glad you found it Stan! Thanks Ben!
FoundSoul is offline   Reply With Quote
Old 07-30-2007, 11:04 AM   #11
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

Quote:
Manifold air temp shouldn't be reading -14* F right?
I hope that shows to anyone considering the "resistor trick" what a bad idea it is.

I had always ***-u-me 'd that the resistor lowered intake temp on a scale. Like took a percentage or a fixed value off actual. I had no clue that it would just lock it in at such a stupid value. That has to be one reason why the JRSC guys get such crappy mileage for 145 rwhp.
Ben is offline   Reply With Quote
Old 07-30-2007, 12:08 PM   #12
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,872
Total Cats: 1,790
Default

nope. It's tells it full cold no matter what.

I used it before to allow for advanced timing on my altima, cause otherwise the ecu would reset ignition timing regardless. Which resulted me in a 15.7x 1/4 mile, with no other mods :gay:
Braineack is offline   Reply With Quote
Old 07-30-2007, 02:02 PM   #13
Junior Member
Thread Starter
 
emerilnut's Avatar
 
Join Date: Nov 2005
Location: Duluth, GA
Posts: 92
Total Cats: 0
Default

Quote:
Originally Posted by Ben View Post
That has to be one reason why the JRSC guys get such crappy mileage for 145 rwhp.
157.8, thank you very much

I bought the car with the supercharger already installed back in 1997, and that was the trick of trade back then. I don't think it's part of the instructions anymore with the Powercard and other better band-aids we have at our disposal now.

This brings up a whole new issue for me... I wonder what kind if mileage I can tune now... 30? 33 mpg? I wasn't even thinking this until last night. hmmmmmm
emerilnut is offline   Reply With Quote
Old 11-20-2008, 10:33 AM   #14
Newb
 
Join Date: Aug 2007
Posts: 32
Total Cats: 0
Default

I also bought a JRSC powered 2000 and it has a PowerCard setup (and I HATE it! and am looking for something better now). I have a ScanGauge in the car and notice my IAT drops to -40 when hitting the gas. Is this the band-aid you guys are talking about? Would I get better MPG with something better?
stubbs is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 58 12-13-2017 10:04 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Moroso Air Oil Separator Catch Can Aroundcorner Miata parts for sale/trade 2 10-01-2015 04:20 PM
ISO 1.6 turbo cast iron manifold cale saurage DIY Turbo Discussion 16 10-01-2015 12:25 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 08:43 AM.