Welcome to the North American Subaru Impreza Owners Club Friday November 28, 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 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.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 09-08-2003, 06:29 PM   #1
rally_wannabe
Scooby Specialist
 
Member#: 15799
Join Date: Feb 2002
Chapter/Region: MAIC
Location: Arlington, VA
Vehicle:
'02 WRX/'06 EVO IX
Vshnu-DPS Stg2/CBRD 405HP

Question Empirical Data to determine most effective Top Mount Intercooler?

I've been searching for hours, google, NABISCO, etc...

I'm getting a TMIC to go with my Vishnu Stage II.

Which one do I want?

Is there any scientific way to determine which might be best?

Bang for buck. Bang for buck.
* Registered users of the site do not see these ads.
rally_wannabe is offline   Reply With Quote
Old 09-08-2003, 06:40 PM   #2
codean
Scooby Specialist
 
Member#: 10186
Join Date: Sep 2001
Chapter/Region: MWSOC
Location: some kind of bmw tech...
Default

nope
codean is offline   Reply With Quote
Old 09-08-2003, 06:43 PM   #3
teiva-boy
Scooby Guru
 
Member#: 22825
Join Date: Aug 2002
Chapter/Region: NWIC
Location: Seattle, WA
Default

Flip a coin?





Seriously, go with what you can afford.
teiva-boy is offline   Reply With Quote
Old 09-08-2003, 08:37 PM   #4
mikkyo
Scooby Specialist
 
Member#: 25399
Join Date: Sep 2002
Location: Silly Valley, CA
Vehicle:
2003 Impreza WRX
Black

Default

The one with the lowest pressure drop?
mikkyo is offline   Reply With Quote
Old 09-08-2003, 08:40 PM   #5
topgrinder
Scooby Newbie
 
Member#: 31649
Join Date: Jan 2003
Default

the vishnu, turboxs, aps, mrt r all good units,, u cant go wrong with either or
topgrinder is offline   Reply With Quote
Old 09-08-2003, 09:17 PM   #6
WR^2X
Scooby Specialist
 
Member#: 37617
Join Date: May 2003
Vehicle:
2007

Default

Personally I like the APS unit... It's the biggest, and so far it is the only one that I have seen that actually states the pressure drop (1.6 PSI total). Maybe I didn't look hard enough though.
WR^2X is offline   Reply With Quote
Old 09-08-2003, 09:47 PM   #7
turboICE
Scooby Specialist
 
Member#: 33979
Join Date: Mar 2003
Chapter/Region: Tri-State
Location: N.NJ
Vehicle:
2006 STi,'11 OBS
WRB & Black/Silver

Default

There is more to it than just pressure drop. Charge temperature drop matters as well and there is only one that fits with the ducting that I am aware of - Spearco/Vishnu.

No empirical data that you are seeking but ducted air would seem more efficient to me.
turboICE is offline   Reply With Quote
Old 09-08-2003, 10:14 PM   #8
MustGoFast
Scooby Specialist
 
Member#: 33370
Join Date: Feb 2003
Location: Milwaukee, WI
Vehicle:
2002 Impreza WRX
Blue now w/ 6 fun flavors

Default

screw the TMIC get the FMIC.
MustGoFast is offline   Reply With Quote
Old 09-08-2003, 10:34 PM   #9
rally_wannabe
Scooby Specialist
 
Member#: 15799
Join Date: Feb 2002
Chapter/Region: MAIC
Location: Arlington, VA
Vehicle:
'02 WRX/'06 EVO IX
Vshnu-DPS Stg2/CBRD 405HP

Default

Quote:
Originally posted by MustGoFast
screw the TMIC get the FMIC.
not necessary for my application.

low bang for buck.
rally_wannabe is offline   Reply With Quote
Old 09-08-2003, 10:37 PM   #10
topgrinder
Scooby Newbie
 
Member#: 31649
Join Date: Jan 2003
Default

seems like every majpr brand tmic claims to be the biggest,, its just silly,, very close to the same all of em... make sure u get a good ic splitter and bigger scoop to maximize the airflow
topgrinder is offline   Reply With Quote
Old 09-08-2003, 10:37 PM   #11
rally_wannabe
Scooby Specialist
 
Member#: 15799
Join Date: Feb 2002
Chapter/Region: MAIC
Location: Arlington, VA
Vehicle:
'02 WRX/'06 EVO IX
Vshnu-DPS Stg2/CBRD 405HP

Default

Quote:
Originally posted by jehcpa
Charge temperature drop matters as well and there is only one that fits with the ducting that I am aware of - Spearco/Vishnu.
will you explain this further please?

I don't understand.

I was figuring that I've got Vishnu everything else.

maybe it's possible that all the components work better together and it's [only] $25 to $100 more for the Vishnu.

maybe your explanation could seal the deal.

[edit] ohhh! you mean the vent ducting in the hood. I get it. you're right, they're the only ones to claim perfect fit with "STi" ducting.

I was thinking I might get an STi hood scoop later.

hmmm. decisions decisions.
rally_wannabe is offline   Reply With Quote
Old 09-08-2003, 10:59 PM   #12
turboICE
Scooby Specialist
 
Member#: 33979
Join Date: Mar 2003
Chapter/Region: Tri-State
Location: N.NJ
Vehicle:
2006 STi,'11 OBS
WRB & Black/Silver

Default

I don't know that I would say that it is that their kit works better than piecing together components. I have a few Vishnu products but am by no means one of their cheerleaders - I would like to think I bought the best for my application, budget and expectations.

The IC has a purpose and that purpose is to cool the charger temperature. You want to bring the post turbo charger temperature back to ambient if possible (which isn't without some type of external sprayer on any IC). The proper functioning of these IC is an air to air transfer of heat. I am a proponent of clean air flow through the core. Use of the properly fitted STi duct (not just the splitter - but the actual sealing rubber duct) should provide the most effective air flow through the core. Unducted ICs lose airflow around the core IMHO.

Vishnu's is not the largest, I think of it as a tall STi IC with better design. It fits the STi, scoop, splitter and ducting. Each of these are necessary to take advantage of the IC and the first two are needed to take advantage of any larger TMIC - of course this does add to the total cost. Although since it is taller the ducting should be trimmed to not hang over so much. In the end I felt it was the best aftermarket TMIC, even if it is more expensive than other larger units.

Pressure drop is important as well. It is the efficiency at cooling that you have to weigh against the pressure drop. I don't know the exact drop - but I bet the pressure drop is less than the OEM or STi IC. Call Vishnu and see if they have the measured drop - I bet they do.

Also since you are already going to the tuning talk with Eric about it as well he may have spec information as well.
turboICE is offline   Reply With Quote
Old 09-09-2003, 12:11 AM   #13
rally_wannabe
Scooby Specialist
 
Member#: 15799
Join Date: Feb 2002
Chapter/Region: MAIC
Location: Arlington, VA
Vehicle:
'02 WRX/'06 EVO IX
Vshnu-DPS Stg2/CBRD 405HP

Default

thanks man.

good ideas and info.
rally_wannabe is offline   Reply With Quote
Old 09-09-2003, 12:23 AM   #14
driggity
Scooby Specialist
 
Member#: 7453
Join Date: Jun 2001
Chapter/Region: TXIC
Location: Grapevine, TX
Vehicle:
2005 Legacy GT Wagon
2006 LJ Rubicon

Default

APS makes ducting that seals with their top mount and an STi (or their) scoop. If I was to get a top mount it would be the Vishnu or APS one for this reason.
driggity is offline   Reply With Quote
Old 09-09-2003, 12:28 AM   #15
turboICE
Scooby Specialist
 
Member#: 33979
Join Date: Mar 2003
Chapter/Region: Tri-State
Location: N.NJ
Vehicle:
2006 STi,'11 OBS
WRB & Black/Silver

Default

Good point - should have known APS (probably did and forgot) would have made a complete set up. I assume it is their own duct to go with their splitter?

If you plan on water spray I do like the cross spray in their duct if I am remembering it correctly.
turboICE is offline   Reply With Quote
Old 09-09-2003, 01:33 AM   #16
driggity
Scooby Specialist
 
Member#: 7453
Join Date: Jun 2001
Chapter/Region: TXIC
Location: Grapevine, TX
Vehicle:
2005 Legacy GT Wagon
2006 LJ Rubicon

Default

They do make their own duct and from the description on their website it seems like the area covered by the duct is bigger than that of the STi duct so their duct (or something custom fabbed) is probably the only choice.

The problem is once you add up the cost of the top mount, any pipes/hoses it needs, the ducting, and an STi size scoop you're near the price of the front mounts. And the Front mount/top mount decision becomes harder. For me at least.
driggity is offline   Reply With Quote
Old 09-09-2003, 03:35 AM   #17
IA Performance
NASIOC Vendor
 
Member#: 25194
Join Date: Sep 2002
Chapter/Region: RMIC
Location: Boulder, CO
Vehicle:
2008 Forester XT 5mt
Dark Gray

Default

plus someone was posting last week about their APS splitter doesnt' acutally fit the APS TMIC 100%. It blocks flow from a certain part of it (I don't recall). Do a search and it is bound to show up.
IA Performance is offline   Reply With Quote
Old 09-09-2003, 10:30 AM   #18
rally_wannabe
Scooby Specialist
 
Member#: 15799
Join Date: Feb 2002
Chapter/Region: MAIC
Location: Arlington, VA
Vehicle:
'02 WRX/'06 EVO IX
Vshnu-DPS Stg2/CBRD 405HP

Default

thanks a lot people.

once again, i'm going with Vishnu.
rally_wannabe 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
giant top mount intercooler fit most WRS/STI willowracer Private 'For Sale' Classifieds 3 07-27-2005 10:33 AM
is a front mount intercooler an upgrade to the top mount intercoolers? ASpec818 Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 2 02-05-2004 12:48 AM
how to fit STi or WRX top mount intercooler? DarkImpreza Normally Aspirated with bolt-on Forced Induction Powertrain 6 08-08-2001 10:23 AM
Front mount intercooler or top mount intercooler? Imprezha Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 26 07-17-2001 03:24 AM


All times are GMT -4. The time now is 09:36 AM.


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.