Welcome to the North American Subaru Impreza Owners Club Friday March 29, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo)

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 11-03-2007, 02:47 PM   #151
simprezl25
Scooby Specialist
 
Member#: 71647
Join Date: Oct 2004
Chapter/Region: MAIC
Location: Maryland
Vehicle:
2002 Bug iD

Default

Quote:
Originally Posted by bushflyr View Post
FWIW, the shorter line actually fit much better for this mod on my '02. Taking off both clamps and rotating the line makes it fit just like factory.
yeh i realized that on my 02 and did the same thing, i didnt have to buy the couplings.
* Registered users of the site do not see these ads.
simprezl25 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 11-06-2007, 11:41 PM   #152
simprezl25
Scooby Specialist
 
Member#: 71647
Join Date: Oct 2004
Chapter/Region: MAIC
Location: Maryland
Vehicle:
2002 Bug iD

Default

i noticed that there is a sensor in my throttle body i'm guessing one is the throttle flap position sensor and the other sensor is for the coolant running thru it.

this sensor is like right on top of my throttle body, if i do this mod, then will my engine temp sensor in my speedometer stay cold since there is no coolant flowing thru?
simprezl25 is offline   Reply With Quote
Old 11-07-2007, 12:22 AM   #153
nhluhr
Scooby Guru
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

There is no temperature sensor on the throttle.
nhluhr is offline   Reply With Quote
Old 11-07-2007, 06:50 AM   #154
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

Quote:
Originally Posted by simprezl25 View Post
i noticed that there is a sensor in my throttle body i'm guessing one is the throttle flap position sensor and the other sensor is for the coolant running thru it.

this sensor is like right on top of my throttle body, if i do this mod, then will my engine temp sensor in my speedometer stay cold since there is no coolant flowing thru?
the sensor mounted to the top of the TB is likely MAP.
ride5000 is offline   Reply With Quote
Old 11-07-2007, 09:57 AM   #155
simprezl25
Scooby Specialist
 
Member#: 71647
Join Date: Oct 2004
Chapter/Region: MAIC
Location: Maryland
Vehicle:
2002 Bug iD

Default

Quote:
Originally Posted by ride5000 View Post
the sensor mounted to the top of the TB is likely MAP.
o ok kool so then no worries right? lol
simprezl25 is offline   Reply With Quote
Old 11-07-2007, 03:13 PM   #156
Strider327
Scooby Specialist
 
Member#: 131280
Join Date: Nov 2006
Chapter/Region: BAIC
Location: Northern California Hayward
Vehicle:
2004 Impreza WRX
WRB

Default

Quote:
Originally Posted by simprezl25 View Post
o ok kool so then no worries right? lol
But that is where the idle air control valve solenoid sits.
Strider327 is offline   Reply With Quote
Old 11-07-2007, 04:41 PM   #157
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

iirc, the iacv has 4 wires. i'm sure the map sensor has 3.

either one is fairly important to the car!
ride5000 is offline   Reply With Quote
Old 01-12-2008, 03:31 PM   #158
06grayrex
Scooby Specialist
 
Member#: 116132
Join Date: May 2006
Location: stl
Vehicle:
2006 wrx tr Stage II
sgm Jorge tuned -RIP :(

Default

So where is all the people complaining about their TBs freezing up this winter?
OH, I forgot there are none.....I haven't seen one case of it....Has anyone else?
06grayrex is offline   Reply With Quote
Old 01-13-2008, 12:21 PM   #159
Spenk
Scooby Guru
 
Member#: 7164
Join Date: Jun 2001
Location: Arizona Bay
Vehicle:
2000 Miata LS
Evo Orange Mica (1/644)

Default

Quote:
Originally Posted by 06grayrex View Post
So where is all the people complaining about their TBs freezing up this winter?
They're all too busy chipping ice off their TBs to post.
Spenk is offline   Reply With Quote
Old 01-13-2008, 12:48 PM   #160
txl146
Scooby Guru
 
Member#: 32459
Join Date: Feb 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX VF34 (SOLD)
Junior Tuned 301whp

Default

just un-did this mod yesterday.... it was a pain to take the hoses off of coupler because it was almost fused into one piece. Plan to do it again when summer comes.
txl146 is offline   Reply With Quote
Old 01-13-2008, 01:48 PM   #161
FCmaniac
Scooby Specialist
 
Member#: 142029
Join Date: Feb 2007
Chapter/Region: Tri-State
Location: Lehigh Valley, PA
Vehicle:
2013 Forester
2008 350z, 1991 Miata BRG

Default

Quote:
Originally Posted by Spenk View Post
They're all too busy chipping ice off their TBs to post.
FCmaniac is offline   Reply With Quote
Old 01-13-2008, 04:36 PM   #162
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

Quote:
Originally Posted by txl146 View Post
just un-did this mod yesterday.... it was a pain to take the hoses off of coupler because it was almost fused into one piece. Plan to do it again when summer comes.
why did you bother?
ride5000 is offline   Reply With Quote
Old 01-13-2008, 07:29 PM   #163
rkramer
Scooby Guru
 
Member#: 118209
Join Date: Jun 2006
Chapter/Region: MWSOC
Location: North Dakota
Vehicle:
2015 WRX Limitec

Default

Quote:
Originally Posted by ride5000 View Post
why did you bother?
I had mine modded for maybe a month total. I DROPPED a little mileage during that time, and didn't notice a difference for power.
rkramer is offline   Reply With Quote
Old 01-13-2008, 08:09 PM   #164
FCmaniac
Scooby Specialist
 
Member#: 142029
Join Date: Feb 2007
Chapter/Region: Tri-State
Location: Lehigh Valley, PA
Vehicle:
2013 Forester
2008 350z, 1991 Miata BRG

Default

yeah I'm sure your drop in mileage was because of that
FCmaniac is offline   Reply With Quote
Old 01-13-2008, 09:08 PM   #165
rkramer
Scooby Guru
 
Member#: 118209
Join Date: Jun 2006
Chapter/Region: MWSOC
Location: North Dakota
Vehicle:
2015 WRX Limitec

Default

Quote:
Originally Posted by FCmaniac View Post
yeah I'm sure your drop in mileage was because of that
trust me it did. I keep very close records, as well as watch mileage with my scangauge. air that is TOO cold can cause partial combustion of the fuel. it doesn't atomize as well and sticks together.

You have noticed how NOBODY has had any issues with freezing? ever think that maybe that coolant isn't even there for freezing, but to help with cold weather emissions?
rkramer is offline   Reply With Quote
Old 01-13-2008, 09:12 PM   #166
txl146
Scooby Guru
 
Member#: 32459
Join Date: Feb 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX VF34 (SOLD)
Junior Tuned 301whp

Default

mine dropped a little also, but I suspect it is due to bad O2 sensor. New O2 is on its way... damn expensive at $160 shipped.
txl146 is offline   Reply With Quote
Old 01-14-2008, 06:40 AM   #167
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

Quote:
Originally Posted by rkramer View Post
trust me it did. I keep very close records, as well as watch mileage with my scangauge. air that is TOO cold can cause partial combustion of the fuel. it doesn't atomize as well and sticks together.

You have noticed how NOBODY has had any issues with freezing? ever think that maybe that coolant isn't even there for freezing, but to help with cold weather emissions?
correlation does not imply causality.

if your theory is correct you'll get even better mileage with a blocked off TMIC. try it and see.
ride5000 is offline   Reply With Quote
Old 01-14-2008, 07:35 AM   #168
jmlaser
Scooby Specialist
 
Member#: 125529
Join Date: Sep 2006
Chapter/Region: MWSOC
Location: Central Ohio
Vehicle:
02 WRX 18G EJ205
1/4 mi stock block record

Default techno inspired

For those of you who are worried about "freezing" in cold weather or poor gas mileage in the winter its seems most of you are somewhat technically minded.
Here is a suggestion for you. Grab some EXTRA fittings, hose and a valve set of some sort. Make it a SWITCHABLE bypass. Then you can simply rotate the valve and flow coolant thru your TB for your "emmisions" or bypass it with the valve for the "power" setting. This would also be a much more consistant way to test if it effects MPG/POWER as the other external conditions likely would not be changing as much (IE. last month I got XX MPG, now I dont. Must be the TB coolant bypass mod.---> but its COMPLETELY different weather out, got different fuel, etc.)
If I am bored next time I have my TMIC off I will try to make this and take some pics.
I would like to see back to back dyno pulls with this switchable bypass as well
jmlaser is offline   Reply With Quote
Old 01-14-2008, 09:55 AM   #169
Rexfan
Scooby Specialist
 
Member#: 50993
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: Philly
Vehicle:
02 WRX Wagon
2.5/Blouch Dom 3/Meth/6sp

Default

I read the entire post and remember only one car with WI/Meth. I use meth and I'm still not sure if I can do this mod? So I'm asking, is it ok?

Rexfan
Rexfan is offline   Reply With Quote
Old 01-14-2008, 05:44 PM   #170
06grayrex
Scooby Specialist
 
Member#: 116132
Join Date: May 2006
Location: stl
Vehicle:
2006 wrx tr Stage II
sgm Jorge tuned -RIP :(

Default

Quote:
Originally Posted by rkramer View Post
I had mine modded for maybe a month total. I DROPPED a little mileage during that time, and didn't notice a difference for power.
I doubt your drop in MPG was from the TB bypass.. It was most likely from the winter grade fuels, colder weather, and longer warm up times.
06grayrex is offline   Reply With Quote
Old 02-12-2008, 12:41 AM   #171
viaburn26
*** Banned ***
 
Member#: 167272
Join Date: Dec 2007
Chapter/Region: MAIC
Location: Richmond VA
Vehicle:
2004 STi
Aspen White

Default

well i'm going to do this today , but after reading every single post no one said anything about what is the proper plug to use to cap off the metal lines . i don't want to run one side to the other .
viaburn26 is offline   Reply With Quote
Old 02-12-2008, 12:49 AM   #172
nhluhr
Scooby Guru
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

you can get some large rubber vacuum caps from the hardwear store. with the TB bypassed, there is no pressure (and no liquid) in the TB so you just need to keep dust/grit from getting in there.
nhluhr is offline   Reply With Quote
Old 02-13-2008, 09:15 AM   #173
Rexfan
Scooby Specialist
 
Member#: 50993
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: Philly
Vehicle:
02 WRX Wagon
2.5/Blouch Dom 3/Meth/6sp

Default

Quote:
Originally Posted by viaburn26 View Post
well i'm going to do this today , but after reading every single post no one said anything about what is the proper plug to use to cap off the metal lines . i don't want to run one side to the other .
I picked up a couple of these at the local auto parts store. I think they were 3/8ths.

Rexfan is offline   Reply With Quote
Old 02-13-2008, 07:32 PM   #174
YFZ450CHUCK
Scooby Newbie
 
Member#: 144027
Join Date: Mar 2007
Chapter/Region: NWIC
Location: salmon creek wa
Vehicle:
2003 wrx
blue

Default

Quote:
Originally Posted by nicholam View Post
I didn't have to buy any fittings. The factory coolant hose will reach the other connection on the block without bending or binding.
true! thats what i did, no fittings at all needed.
YFZ450CHUCK is offline   Reply With Quote
Old 02-13-2008, 07:50 PM   #175
teddyj
Scooby Newbie
 
Member#: 121796
Join Date: Aug 2006
Chapter/Region: RMIC
Location: Denver, CO
Vehicle:
2005 Blue WRX Sedan
In Subaru I Trust!

Default

If it was anyone but mikie that said it happened I would call them a liar. Since it WAS mikie, I just scratch my head in curiosity. Still not convinced and think its something else though.[/quote]

Hahaa, nice way to end the rant!
teddyj is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Throttle body coolant bypass problem? SubasaurusWrex Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 4 04-27-2006 02:05 PM
Throttle body coolant bypass = blocking flow instead of rerouting? athakur999 General Community 7 04-13-2006 08:33 PM
Throttle body coolant path. Aus_RS Normally Aspirated with bolt-on Forced Induction Powertrain 3 04-26-2004 11:55 PM
Turbo Q: Can you use the Throttle Body coolant lines for the Turbo? Kostamojen Normally Aspirated with bolt-on Forced Induction Powertrain 35 02-22-2004 09:14 PM
Throttle Body coolant line mod WRX Joe Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 41 07-14-2002 11:55 AM

All times are GMT -4. The time now is 07:50 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.