Welcome to the North American Subaru Impreza Owners Club Sunday April 19, 2015
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 2.5L Turbo Powertrain (EJ Series Factory 2.5L 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 12-01-2004, 11:35 AM   #1
909STi
Scooby Newbie
 
Member#: 62490
Join Date: May 2004
Chapter/Region: SCIC
Location: Dana Point
Vehicle:
2005 WRX STi
FP Green'd & Yimi Tuned

Default Magnus Motorsports Intake Manifold

I just spotted this thing while looking at some SEMA pics of the Modified Magazine project car.

http://www.magnusmotorsports.com/index.htm


After doing a search, I know that the STi that STFUTuning is selling is supposed to have one too. Does anyone else have any experience with this intake manifold? Is it a worthwhile mod (~$850) for a stock turbo'd car? Does it sacrifice low-end power/torque for high RPM gains?
* Registered users of the site do not see these ads.
909STi is offline   Reply With Quote
Old 12-01-2004, 01:03 PM   #2
SloRice
Scooby Specialist
 
Member#: 44351
Join Date: Sep 2003
Chapter/Region: MWSOC
Location: Cincinnati, OH
Vehicle:
2004 Mitsubishi Evo
701whp 9.91@146

Default

ive heard good things about them with the DSM's. Not really sure what its going to do for your powerband though. Send them an email showing before and after dyno plots.
SloRice is offline   Reply With Quote
Old 12-01-2004, 01:20 PM   #3
SilverSurfer04STi
Scooby Specialist
 
Member#: 71542
Join Date: Sep 2004
Chapter/Region: MWSOC
Location: Midwest
Vehicle:
2013 WRB BRZ

Default

Please post what you learn if you contact them. I'm intersted.
SilverSurfer04STi is offline   Reply With Quote
Old 12-01-2004, 01:41 PM   #4
WRC_Obsessed
Scooby Specialist
 
Member#: 16268
Join Date: Mar 2002
Chapter/Region: NESIC
Location: Brighton/NNJ
Vehicle:
2004 STi
WRB

Default

At what point is this mod really worth it?

Stock? Turbo upgrade?
WRC_Obsessed is offline   Reply With Quote
Old 12-01-2004, 02:09 PM   #5
bboy
Scooby Specialist
 
Member#: 56468
Join Date: Mar 2004
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
04 Improved STI
Dirty White

Default

Looks like it might get rid of the tumbler valves, that would be a bene'.

The turbo is no longer in it's stock position and one reason is that manifold is much lower on the block (no inlet hose under the manifold, and the back cylinders are plumbed under the front). Routing a new turbo inlet is not necessarily a bad thing, but does mean custom up and down pipes.

The turbo pictured is kind of interesting too, and perhaps telling. It looks to have a triangular turbine flange, a much more common form-- that would open the WRX up to tons of turbos and less expensive ones. Looks like it's internally gated (see the actuator on the left).

Good find. That's not a product.........yet.

For comparison, and much closer to production look here:

http://www.elementtuning.com/ElementGT4.jpg

The top mount is gone, but I'm not sure that it is precluded.
bboy is offline   Reply With Quote
Old 12-01-2004, 02:49 PM   #6
909STi
Scooby Newbie
 
Member#: 62490
Join Date: May 2004
Chapter/Region: SCIC
Location: Dana Point
Vehicle:
2005 WRX STi
FP Green'd & Yimi Tuned

Default

OK, I sent an email to Magnus Motorsports. I will post the reply when I get it.
909STi is offline   Reply With Quote
Old 12-01-2004, 03:48 PM   #7
909STi
Scooby Newbie
 
Member#: 62490
Join Date: May 2004
Chapter/Region: SCIC
Location: Dana Point
Vehicle:
2005 WRX STi
FP Green'd & Yimi Tuned

Default

Here is their reply:

Quote:
We are tooling up to make the intake manifolds now, they wont be ready for a few weeks yet. It made 35 hp to the wheels on the Modified Magazine STi, the dyno plots will be featured in their magazine. It does not show any loss of low end power on because of the proper runner length. Flow test will be released shortly.

The first 10 units will be 1000 dollars as an introductory special, then they will be 1200.
So I am still not sure how much HP it would make with a stock turbo, or if it even fits, but I think this will become a popular mod for guys that have an upgraded turbo and want to maximize their power.
909STi is offline   Reply With Quote
Old 12-01-2004, 04:19 PM   #8
STi-MAN
Scooby Guru
 
Member#: 70252
Join Date: Sep 2004
Vehicle:
05 STI
blue

Default

check out this intake mani, here
STi-MAN is offline   Reply With Quote
Old 12-01-2004, 04:33 PM   #9
Capt Crunch
Scooby Guru
 
Member#: 10852
Join Date: Oct 2001
Chapter/Region: MAIC
Location: Cleveland / UMD College Park
Vehicle:
Then : JDM Ver 7 STi
Now : E46 M3 / MKVI GTI

Default

Quote:
Originally Posted by STi-MAN
check out this intake mani, here
I WANT THAT.

Anyone have any idea where to get it?
Capt Crunch is offline   Reply With Quote
Old 12-01-2004, 04:42 PM   #10
STi-MAN
Scooby Guru
 
Member#: 70252
Join Date: Sep 2004
Vehicle:
05 STI
blue

Default

hahhaha i want that crap too, your gonna need someone who can import it. maybe talk to kyle at bulletproof.
STi-MAN is offline   Reply With Quote
Old 12-01-2004, 04:55 PM   #11
wcbjr
Scooby Guru
 
Member#: 4001
Join Date: Feb 2001
Location: I love spherical bearings!
Vehicle:
2006 Legacy GT
Obsidian black

Default

Quote:
Originally Posted by 909STi
We are tooling up to make the intake manifolds now, they wont be ready for a few weeks yet. It made 35 hp to the wheels on the Modified Magazine STi, the dyno plots will be featured in their magazine. It does not show any loss of low end power on because of the proper runner length. Flow test will be released shortly.

The first 10 units will be 1000 dollars as an introductory special, then they will be 1200.
They might only sell 10 at that price...
wcbjr is offline   Reply With Quote
Old 12-01-2004, 05:05 PM   #12
Capt Crunch
Scooby Guru
 
Member#: 10852
Join Date: Oct 2001
Chapter/Region: MAIC
Location: Cleveland / UMD College Park
Vehicle:
Then : JDM Ver 7 STi
Now : E46 M3 / MKVI GTI

Default

Quote:
Originally Posted by STi-MAN
hahhaha i want that crap too, your gonna need someone who can import it. maybe talk to kyle at bulletproof.
ah forget it, its from their one-off race car.

man, I want a rotated turbo setup that draws it's intake from the hoodscoop and has a grill mount intercooler.
Capt Crunch is offline   Reply With Quote
Old 12-01-2004, 05:27 PM   #13
CBRDSpeedfactory
Vendor
 
Member#: 68255
Join Date: Aug 2004
Chapter/Region: MAIC
Location: Pennsylvania
Vehicle:
ALL lots of fast 1s
mostly silver!

Default how about...

how about a water/air with the tig welded radiator behind the grille...wink wink...

chad b
CBRD
chadblock.com
CBRDSpeedfactory is offline   Reply With Quote
Old 12-01-2004, 05:46 PM   #14
Evil STI
Scooby Specialist
 
Member#: 36792
Join Date: May 2003
Chapter/Region: Tri-State
Location: NNJ HamfistRacing.com
Vehicle:
2014 Camaro 1LE
gold chains & meatballs

Default

Has anyone Extrude Hone'd their intake manifold and at the same time did the tumbler valve delete? Does deleting the tumbler valves send CELs or is it a freebie mod? I would do it if it were worthwhile.
Evil STI is offline   Reply With Quote
Old 12-01-2004, 06:25 PM   #15
antimullet
Scooby Specialist
 
Member#: 44193
Join Date: Sep 2003
Chapter/Region: South East
Location: Relocated to Raleigh, NC
Vehicle:
2008 WRX STi
Silver

Default

Quote:
Originally Posted by Evil STI
Has anyone Extrude Hone'd their intake manifold and at the same time did the tumbler valve delete? Does deleting the tumbler valves send CELs or is it a freebie mod? I would do it if it were worthwhile.
1, Not sure, but it works in a mustang, not sure about a STi though,

2. Yes it sends CEL, but you can get a kit to lock the sensor in place to eliminate the cel. Not sure who makes it maybe APS????
antimullet is offline   Reply With Quote
Old 12-01-2004, 06:29 PM   #16
root
Scooby Specialist
 
Member#: 55854
Join Date: Feb 2004
Location: Central FL
Vehicle:
2004 STi
Blue/silver

Default

Aye. It is APS. They make a tumbler delete for the STi. There is also a thread on here somewhere with folks doing it themselves "the hard way". A quick search should probably bring it up.
root is offline   Reply With Quote
Old 12-01-2004, 07:56 PM   #17
Zornorph
Scooby Specialist
 
Member#: 17332
Join Date: Apr 2002
Chapter/Region: NESIC
Location: The neighbor's yard
Vehicle:
2004 Black STI
Not stock anymore

Default

That race setup is what the subie community needs! How about lowering the radiator and getting that IC up high, out front with short, low volume piping. People jump on $1200 FMC's, why not a $1600 or so radiator/IC kit that really acts like a TMC lag wise but Cools with a FMC
Zornorph is offline   Reply With Quote
Old 12-01-2004, 07:59 PM   #18
silverstipa
Scooby Specialist
 
Member#: 42271
Join Date: Aug 2003
Location: Columbia, MD
Vehicle:
2004 STI - FPgreen
Enjoyed by a new owner

Default

I saw one of the Magnus intake manifolds on a DSM a few weeks ago...cracked right at the weld
silverstipa is offline   Reply With Quote
Old 12-01-2004, 08:11 PM   #19
Zornorph
Scooby Specialist
 
Member#: 17332
Join Date: Apr 2002
Chapter/Region: NESIC
Location: The neighbor's yard
Vehicle:
2004 Black STI
Not stock anymore

Default

Hey - iaperformance has jdm take-off tumbler deletes fairly cheap IIRC.
Zornorph is offline   Reply With Quote
Old 12-01-2004, 08:19 PM   #20
CBRDSpeedfactory
Vendor
 
Member#: 68255
Join Date: Aug 2004
Chapter/Region: MAIC
Location: Pennsylvania
Vehicle:
ALL lots of fast 1s
mostly silver!

Default I looked at doing that

the ideal thing would be to turn the mani around like the rally car...and do a grille mounted front mount...shorter piping...

when i get done with our first sti with the avo500 and our waterair...im going to do one with a rotated mount turbo with the intake box built into the hoodscoop.

chad b
CBRDSpeedfactory is offline   Reply With Quote
Old 12-01-2004, 10:28 PM   #21
HighTechRedneck
Scooby Newbie
 
Member#: 68022
Join Date: Aug 2004
Location: Canada
Vehicle:
04 Forester XT

Default

Look at the top 10 fastest DSM/Evo's, most are running a Magnus mani, or a cheap copy.

The Modified Mag STI has an HKS turbo kit (GTrs or something like that). The manifold is not the reason for the rotated mount turbo, the turbo was there first.

According to Marco at Magnus, the manifold will bolt on just like stock, no worries about turbo inlet pipe etc.. The TGV will remain untouched.

I know where the car was tuned with the manifold, who tuned it, and what gains were made, but I'll leave all that for the Magazine. The manifold is a nice piece, and if I can come up with the money I'll buy one.

And as usual, I can't believe how many people posted in this thread knowing nothing about it.
HighTechRedneck is offline   Reply With Quote
Old 12-02-2004, 10:16 AM   #22
wcbjr
Scooby Guru
 
Member#: 4001
Join Date: Feb 2001
Location: I love spherical bearings!
Vehicle:
2006 Legacy GT
Obsidian black

Default

My comment still stands. People are paying for the R&D, a LOT of R&D.
wcbjr is offline   Reply With Quote
Old 12-02-2004, 10:30 AM   #23
midnightsti
Scooby Newbie
 
Member#: 74095
Join Date: Nov 2004
Chapter/Region: SCIC
Location: San Diego
Vehicle:
2004 STI w/CP S2
Perrin GT30R .82 ;)

Default

I have been calling them about this manifold for a week now, and I can't wait to get it.
midnightsti is offline   Reply With Quote
Old 12-02-2004, 03:53 PM   #24
mbiker97
Scooby Guru
 
Member#: 7922
Join Date: Jun 2001
Chapter/Region: MWSOC
Location: Tucson
Vehicle:
04 CTS-V b/b/b
99 GMC Highrider

Default

Quote:
Originally Posted by Zornorph
That race setup is what the subie community needs! How about lowering the radiator and getting that IC up high, out front with short, low volume piping. People jump on $1200 FMC's, why not a $1600 or so radiator/IC kit that really acts like a TMC lag wise but Cools with a FMC
Like this?



Extrude honing the stock manifold does pretty good. I can't see spending $1000+ on a new manifold unless everything else was already done to the car.
mbiker97 is offline   Reply With Quote
Old 12-02-2004, 04:02 PM   #25
Optimus Prime
Scooby Specialist
 
Member#: 69847
Join Date: Sep 2004
Location: Cybertron
Vehicle:
2010 Evolution X

Default

Ultra Magnus?
Optimus Prime 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
Ebay (xo2racing) Magnus style Intake Manifold GeneralTJI Car Part Reviews 3 11-10-2009 06:27 PM
AZ: Magnus Sheetmetal Intake Manifold Evil Imports Engine/Power/Exhaust 30 07-19-2009 02:33 PM
Magnus Sheetmetal Intake Manifold for STI Evil Imports SWIC Private Classifieds 0 03-30-2009 03:10 PM
FS Magnus STi Intake Manifold chucktoo Private 'For Sale' Classifieds 0 10-28-2005 06:48 AM


All times are GMT -4. The time now is 02:50 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.