Welcome to the North American Subaru Impreza Owners Club Wednesday August 20, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC General > Proven Power Bragging

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.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 02-05-2013, 08:37 AM   #151
amalgrover
Scooby Specialist
 
Member#: 183480
Join Date: Jun 2008
Chapter/Region: South East
Location: Valdosta, GA
Vehicle:
2011 Audi A3 Quattro
2009 Forester XT

Default

The air coming out of the crank vent enters after the maf sensor and isn't measured by the maf sensor, so I don't understand why you would say that an maf setup would be required to run back to the inlet. If you could please explain your reasoning on this, I would really appreciate it.

I ran VTA on maf setup for a LONG time on my personal vehicle, and had no issues whatsoever. I also know of quite a few shops that run VTA with maf setups without issue as well.
* Registered users of the site do not see these ads.
amalgrover is offline   Reply With Quote
Old 02-05-2013, 08:51 AM   #152
juanmedina
Scooby Guru
 
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:
07 FPgreen 7.37@95
WRX VF39+E85 12.0, 121mph

Default

Quote:
Originally Posted by Phatron View Post
dual intercoolers ftw
...

Quote:
Originally Posted by amalgrover View Post
The air coming out of the crank vent enters after the maf sensor and isn't measured by the maf sensor, so I don't understand why you would say that an maf setup would be required to run back to the inlet. If you could please explain your reasoning on this, I would really appreciate it.

I ran VTA on maf setup for a LONG time on my personal vehicle, and had no issues whatsoever. I also know of quite a few shops that run VTA with maf setups without issue as well.
Well my APS CAI doesn't work with the Perrin FMIC. I have Amsoil filter and is too big and hits the tire.

So we are going to Speed Density.

Does anyone have a suggestion or were to install the IAT sensor?



Does it have to be on a straight section?
juanmedina is online now   Reply With Quote
Old 02-05-2013, 08:59 AM   #153
amalgrover
Scooby Specialist
 
Member#: 183480
Join Date: Jun 2008
Chapter/Region: South East
Location: Valdosta, GA
Vehicle:
2011 Audi A3 Quattro
2009 Forester XT

Default

If actually planning to move the sensor, you are going to want it as close to the cylinder as possible because the IAT sensor's whole purpose in speed density is to estimate cylinder charge temps. So, the closer you get it to the actual entry of the cylinder, the more accurate these estimates will be.
amalgrover is offline   Reply With Quote
Old 02-05-2013, 09:19 AM   #154
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

Default

Quote:
Originally Posted by juanmedina View Post
Does anyone have a suggestion or were to install the IAT sensor?

Does it have to be on a straight section?
Place the IAT sensor right in front of the throttle body, use a chunk of stainless steel tubing as its less prone to heat soak than aluminum 321 is better than 304.
manitou is offline   Reply With Quote
Old 02-05-2013, 09:49 AM   #155
kellygnsd
Scooby Guru
 
Member#: 32669
Join Date: Feb 2003
Chapter/Region: SCIC
Location: Rancho C
Vehicle:
2007 2.34LR, EFR7670
LINK G4 hybrid STi

Default

Quote:
Originally Posted by amalgrover View Post
The air coming out of the crank vent enters after the maf sensor and isn't measured by the maf sensor, so I don't understand why you would say that an maf setup would be required to run back to the inlet. If you could please explain your reasoning on this, I would really appreciate it.

I ran VTA on maf setup for a LONG time on my personal vehicle, and had no issues whatsoever. I also know of quite a few shops that run VTA with maf setups without issue as well.
And its already combusted air so it wouldn't need to be metered again.
kellygnsd is offline   Reply With Quote
Old 02-05-2013, 10:36 AM   #156
juanmedina
Scooby Guru
 
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:
07 FPgreen 7.37@95
WRX VF39+E85 12.0, 121mph

Default

Quote:
Originally Posted by manitou View Post
Place the IAT sensor right in front of the throttle body, use a chunk of stainless steel tubing as its less prone to heat soak than aluminum 321 is better than 304.
what do you mean by chunk of tubing?

It has to be on that intercooler pipe that connects to the throttle body. I think the Perrin piping is STN STL but I am not sure. The location of the pipe sucks, it goes over the turbo and then besides the coolant filler tank .
juanmedina is online now   Reply With Quote
Old 02-05-2013, 12:05 PM   #157
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

Default

Quote:
Originally Posted by juanmedina View Post

what do you mean by chunk of tubing?

It has to be on that intercooler pipe that connects to the throttle body. I think the Perrin piping is STN STL but I am not sure. The location of the pipe sucks, it goes over the turbo and then besides the coolant filler tank .
I meant that you should add a chunk of SS for the IAT sensor if the IC piping is all aluminum which I think the Perrin is.
manitou is offline   Reply With Quote
Old 02-05-2013, 12:27 PM   #158
juanmedina
Scooby Guru
 
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:
07 FPgreen 7.37@95
WRX VF39+E85 12.0, 121mph

Default

Quote:
Originally Posted by manitou View Post
I meant that you should add a chunk of SS for the IAT sensor if the IC piping is all aluminum which I think the Perrin is.
yes you are correct the piping is made of aluminum. I guess I can wrap the sensor with gold tape or something.

Last edited by juanmedina; 02-05-2013 at 12:43 PM.
juanmedina is online now   Reply With Quote
Old 02-05-2013, 12:43 PM   #159
amalgrover
Scooby Specialist
 
Member#: 183480
Join Date: Jun 2008
Chapter/Region: South East
Location: Valdosta, GA
Vehicle:
2011 Audi A3 Quattro
2009 Forester XT

Default

Quote:
Originally Posted by kellygnsd View Post
And its already combusted air so it wouldn't need to be metered again.
This is what I thought too, which is why I was wondering why it would matter if someone was maf vs SD...figured fastblueufo is a smart guy and may know some secret I don't...
amalgrover is offline   Reply With Quote
Old 02-05-2013, 12:50 PM   #160
amalgrover
Scooby Specialist
 
Member#: 183480
Join Date: Jun 2008
Chapter/Region: South East
Location: Valdosta, GA
Vehicle:
2011 Audi A3 Quattro
2009 Forester XT

Default

Quote:
Originally Posted by manitou View Post
I meant that you should add a chunk of SS for the IAT sensor if the IC piping is all aluminum which I think the Perrin is.
You are going to want to be careful mating SS to aluminum...not saying don't, but I would plan this out carefully. SS and aluminum touching each other in an area exposed to the elements and constant heating and cooling cycles are possibly going to see corrosion if it isn't cared for properly.

Also, SS may be less prone to heatsoak, but it is also much harder to cool down once it does. My IC piping is SS instead of aluminum, and it takes much longer to cool it down than similar setups running aluminum piping...it also takes much longer to heat up vs aluminum piping too though. It is a tradeoff...
amalgrover is offline   Reply With Quote
Old 02-05-2013, 12:53 PM   #161
juanmedina
Scooby Guru
 
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:
07 FPgreen 7.37@95
WRX VF39+E85 12.0, 121mph

Default

Quote:
Originally Posted by amalgrover View Post
You are going to want to be careful mating SS to aluminum...not saying don't, but I would plan this out carefully. SS and aluminum touching each other in an area exposed to the elements and constant heating and cooling cycles are possibly going to see corrosion if it isn't cared for properly.

Also, SS may be less prone to heatsoak, but it is also much harder to cool down once it does. My IC piping is SS instead of aluminum, and it takes much longer to cool it down than similar setups running aluminum piping...it also takes much longer to heat up vs aluminum piping too though. It is a tradeoff...
yeap..

how about this guy IAT sensor location?



I ordered the bung and the sensor, hopefully I will have my car up and running soon.
juanmedina is online now   Reply With Quote
Old 02-05-2013, 03:11 PM   #162
GT35RHybrid
Scooby Newbie
 
Member#: 223237
Join Date: Sep 2009
Chapter/Region: South East
Default

Quote:
Originally Posted by juanmedina View Post
According to you graph you made 527whp at 28psi and trapped 136mph . Mine should be somewhat lighter than your, we will see what I trap.
On the dyno 28 psi yes. On the street no...30-31 psi

Quit being skeered.
GT35RHybrid is offline   Reply With Quote
Old 02-05-2013, 03:15 PM   #163
GT35RHybrid
Scooby Newbie
 
Member#: 223237
Join Date: Sep 2009
Chapter/Region: South East
Default

Turbo blanket the turbo and relocated the coolant tank = happier temps.
GT35RHybrid is offline   Reply With Quote
Old 02-05-2013, 04:04 PM   #164
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

Default

Quote:
Originally Posted by amalgrover View Post
You are going to want to be careful mating SS to aluminum...not saying don't, but I would plan this out carefully. SS and aluminum touching each other in an area exposed to the elements and constant heating and cooling cycles are possibly going to see corrosion if it isn't cared for properly.

Also, SS may be less prone to heatsoak, but it is also much harder to cool down once it does. My IC piping is SS instead of aluminum, and it takes much longer to cool it down than similar setups running aluminum piping...it also takes much longer to heat up vs aluminum piping too though. It is a tradeoff...
You are going to have a silicone coupler connecting the aluminum and the SS piping both will hopefully have beaded ends and t-bolt clamps on the coupler! If you're really concerned about galvanic corrosion between the 2 metals then you can coat the aluminum but it should not be necessary. I would take the SS's better resistance to heat conduction over the better cooling properties of the aluminum! JMHO

Regardless get the IAT as close to the TB as possible without picking up heat from the surrounding components.
manitou is offline   Reply With Quote
Old 02-05-2013, 08:45 PM   #165
amalgrover
Scooby Specialist
 
Member#: 183480
Join Date: Jun 2008
Chapter/Region: South East
Location: Valdosta, GA
Vehicle:
2011 Audi A3 Quattro
2009 Forester XT

Default

ahhh...I thought you were saying to weld a piece of SS to the aluminum...
amalgrover is offline   Reply With Quote
Old 02-05-2013, 09:55 PM   #166
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

Default

OK, now I see why you were concerned about the galvanic reaction/ corrosion. I would never weld the two!
manitou is offline   Reply With Quote
Old 02-06-2013, 09:30 AM   #167
Subian
Scooby Specialist
 
Member#: 202804
Join Date: Feb 2009
Chapter/Region: MWSOC
Location: Chitcago, IL
Vehicle:
2002 PSM Sedan
The 2.0L that could

Default

Juan, Here's one way to do it, but it involves taking off the IM.

Subian is offline   Reply With Quote
Old 02-16-2013, 07:09 PM   #168
Slimsti
Scooby Specialist
 
Member#: 155696
Join Date: Aug 2007
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2007 BLK STI Dom3XTR
415/405 Precision Tuning

Default

Any updates?
Slimsti is offline   Reply With Quote
Old 02-17-2013, 07:06 PM   #169
juanmedina
Scooby Guru
 
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:
07 FPgreen 7.37@95
WRX VF39+E85 12.0, 121mph

Default

Quote:
Originally Posted by Slimsti View Post
Any updates?
I am on SD .

The car is super smooth and really quiet during cruising vs maf. Ron has done an amazing job with the tune. It seems that I lost about 200rpm of spool but the whp/wtq gains have been significant. I probably will be swapping the 1200cc injectors for the 2200cc injectors very soon.

Last edited by juanmedina; 02-17-2013 at 08:06 PM.
juanmedina is online now   Reply With Quote
Old 02-17-2013, 08:04 PM   #170
Slimsti
Scooby Specialist
 
Member#: 155696
Join Date: Aug 2007
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2007 BLK STI Dom3XTR
415/405 Precision Tuning

Default

Told u sd was the way to go. What kind of power are u seeing as we speak?

Last edited by Slimsti; 02-17-2013 at 08:23 PM.
Slimsti is offline   Reply With Quote
Old 02-17-2013, 10:53 PM   #171
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

Default

Quote:
Originally Posted by juanmedina View Post

I am on SD .

The car is super smooth and really quiet during cruising vs maf. Ron has done an amazing job with the tune. It seems that I lost about 200rpm of spool but the whp/wtq gains have been significant. I probably will be swapping the 1200cc injectors for the 2200cc injectors very soon.
SD is the **** with these bigger snails for sure! I'll bet the FMIC. accounts for some of that spool lost. Are you guys sure you can't get more out of the 1200's? You did the re-wire of the pump and you have the big Wally right? What your base at? You could also do a boost a pump!
manitou is offline   Reply With Quote
Old 02-18-2013, 01:24 AM   #172
project_skyline
Scooby Specialist
 
Member#: 153880
Join Date: Jul 2007
Chapter/Region: RMIC
Location: Western Slope, Colorado
Vehicle:
03 Evo VIII
2011 STI

Default

Quote:
Originally Posted by Subian View Post
Juan, Here's one way to do it, but it involves taking off the IM.

That see's a lot of heat soak though, which makes for a pretty inaccurate signal.
project_skyline is offline   Reply With Quote
Old 02-18-2013, 02:16 AM   #173
Irv Weissmanhowerton
Scooby Specialist
 
Member#: 278519
Join Date: Apr 2011
Chapter/Region: SCIC
Location: Area P, Alliance Fab
Vehicle:
30r E85 STI K'biz
Phatbotti Tuning

Default

didnt see anything in his mod list that said fpr, that be a good amount of money to swap his lines/fittings and buy a regulator, if he doesnt have any rails or lines now, even more, could easily spend 350-500 on all of it, sure having the fpr makes adj nice, but im sure he'd rather get new injectors instead
Irv Weissmanhowerton is online now   Reply With Quote
Old 02-18-2013, 08:07 AM   #174
silverwerx
Scooby Specialist
 
Member#: 81246
Join Date: Feb 2005
Chapter/Region: MAIC
Location: 512 whp
Vehicle:
. .13 EVO X MR
.03 Cosworth Wrx, 14 Jeep

Default

did you do that pull in 4rd gear? lol
silverwerx is offline   Reply With Quote
Old 02-18-2013, 08:42 AM   #175
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

Default

Quote:
Originally Posted by Irv Weissmanhowerton View Post
didnt see anything in his mod list that said fpr, that be a good amount of money to swap his lines/fittings and buy a regulator, if he doesnt have any rails or lines now, even more, could easily spend 350-500 on all of it, sure having the fpr makes adj nice, but im sure he'd rather get new injectors instead
Yeah easy 500 but I would think that Juan would want a FPR anyways and with a higher base pressure, the big pump re-wired he may have enough injector now!
manitou 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


All times are GMT -4. The time now is 01:14 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.