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Old 03-22-2007, 12:30 PM   #1
tonzo
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Subaru Stars aftermarket intake manifold

I'm just curious to hear what people think. Now I've been looking at some of these manifolds and I'm just wondering. Do you find 1100 dollars to be a substantial price for a magnus or similar style intake?

If there were an intake that was of similar quality but by a less well known producer would you be willing to try it out if it were half the price of a magnus?
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Old 03-22-2007, 11:08 PM   #2
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i would say there is always a want for a aftermarket manifold
from the few i ve made the only consideration you would have to take while building one is that there aren t as many people that could run it unless they were already at the extreme modded setup because you do away with alot of the bolt on mounting areas that the subies have
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Old 03-22-2007, 11:35 PM   #3
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Yeah, there is definately a want for it, a few more on the market would chop the price down some I'd think.

Most people buying them are already modded pretty heavily anyways so a lack of a few things wouldnt kill the market
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Old 03-23-2007, 12:55 AM   #4
Optical NZ
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What sort of advantages do the aftermarket intake manifiolds provide?

Improvent in power or torque across the rev range, or perhaps just in certain parts of the rev range?
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Old 03-23-2007, 01:53 AM   #5
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usually increased low end and definitely increased throttle response. All the designs ive seen were designed with larger "funnelesque" runners and a plenum with a volume in comparison to our engine volume. Some have suffered slightly in the top end.

The advantages of this come mainly when you are looking for more area under your power and torque curve and also for the increased throttle response it offers. Great advtanages in the world of auto-x, rally and other sports.
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Old 03-23-2007, 02:11 AM   #6
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I figured if these became more common, almost as common as exhaust manifolds (well...maybe not tthhat common) that more people would be open to buying them
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Old 03-23-2007, 09:58 AM   #7
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if anyone lives near philadelphia, pa there is a very well known fabricator there who if you gave him a call he may be interested in making SMIM for subys. He makes a SMIM for DSM's that are 1/2 of a magnus price and out perform them. Check out www.JMFABRICATIONS.com, he is always open to suggestions!
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Old 03-23-2007, 10:04 AM   #8
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If your thinking of building them for a turbo subi you could do an entire kit that includes a reversed intake manifold that includes a front mount to go with it. I would guess that you could keep the turbo in its stock locations then just develop new piping from the turbo to the intercooler then up to the reversed intake. Should be fairly plug and play unless you need to relocate the ac compressor or alternator.
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Old 03-23-2007, 10:24 AM   #9
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Just go get the USDM 2.5I manifold and make it work. No TGV's a much bigger plenum, and much better routing of the runners. It won't work with a TMIC though.


TMS
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Old 03-24-2007, 09:06 PM   #10
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Alright, I have to be carefull how I do this untill I pay for vedor fees. We have a new intake manifold that will be available very soon. It has already gone through the flowbench testing phase and we will have one at subiefest 2 in a couple of weeks. I am sharing a booth with enduratech coilovers so stop in and check it out. This manifold will be less expensive than the other options currently on the market and should outperform them as well. I have shown pics of the prototype to a few vendors that we hope will be our distributers (we will see, and hopefully we can meet the expectations)

Keep an eye out for Brewpubeavers car as he will be the test bed. This manifold will be setup to allow it to be rotated and we will have tubing kits to match up with the major FMIC options.


Mods I hope this hasnt crossed the bounds and I appoligize in advance if it has.

Last edited by Sinister redlines; 03-25-2007 at 02:03 PM.
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Old 03-25-2007, 10:09 AM   #11
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Heard too many bad things about the Magnus and it's construction - I was in the market but quickly changed my mind after reading some reviews.
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Old 03-25-2007, 11:07 AM   #12
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Quote:
Originally Posted by PeteDucati View Post
Heard too many bad things about the Magnus and it's construction - I was in the market but quickly changed my mind after reading some reviews.
Yeah I think it's a little pricey for a piece with questionable quality...it will be nice to see some competition on the market
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Old 03-27-2007, 02:24 AM   #13
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has anyone heard or seen this here in the states. http://www.tracktive.co.uk/content.php?page=139

I dont even recall how I found this site
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Old 03-27-2007, 11:09 AM   #14
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This is what is going on my car. You need to use a FMIC and DBW throttle, and a little bit of work to use it. But I don't care I really like the way it looks, and it is an OEM part.

TMS
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Old 03-28-2007, 04:35 PM   #15
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Quote:
Originally Posted by TheMadScientist View Post
This is what is going on my car. You need to use a FMIC and DBW throttle, and a little bit of work to use it. But I don't care I really like the way it looks, and it is an OEM part.
Does the 2.5i have a topfeed or sidefeed injector setup?
Will any existing fuel rails bolt up?
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Old 03-28-2007, 05:00 PM   #16
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Quote:
Originally Posted by x99percent View Post
Does the 2.5i have a topfeed or sidefeed injector setup?
Will any existing fuel rails bolt up?
Top feed.
I will be using the stock 2.5i rails converted to parallel feed. They are ~$35 side. I don't know about aftermarket ones.

TMS
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Old 03-28-2007, 05:04 PM   #17
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Quote:
Originally Posted by Sinister redlines View Post
Alright, I have to be carefull how I do this untill I pay for vedor fees. We have a new intake manifold that will be available very soon. It has already gone through the flowbench testing phase and we will have one at subiefest 2 in a couple of weeks. I am sharing a booth with enduratech coilovers so stop in and check it out. This manifold will be less expensive than the other options currently on the market and should outperform them as well. I have shown pics of the prototype to a few vendors that we hope will be our distributers (we will see, and hopefully we can meet the expectations)

Keep an eye out for Brewpubeavers car as he will be the test bed. This manifold will be setup to allow it to be rotated and we will have tubing kits to match up with the major FMIC options.


Mods I hope this hasnt crossed the bounds and I appoligize in advance if it has.


seems like you worded it just right, lol..

i can not wait to get this on the car
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Old 03-28-2007, 05:25 PM   #18
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Themadscientist,

What manifold is that?
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Old 03-28-2007, 05:28 PM   #19
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Quote:
Originally Posted by wrxzzz View Post
Themadscientist,

What manifold is that?

2006 USDM Impreza 2.5i single overhead cam.
There is a legacy version that uses TGV housings too. The legacy version will not bolt straight on the impreza TGV's.

TMS
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Old 04-03-2007, 11:29 AM   #20
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Quote:
Originally Posted by TheMadScientist View Post
2006 USDM Impreza 2.5i single overhead cam.
There is a legacy version that uses TGV housings too. The legacy version will not bolt straight on the impreza TGV's.

TMS

What exactly would I have to do to get this to work on 04 sti.
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Old 04-04-2007, 02:11 AM   #21
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Quote:
Originally Posted by TheMadScientist View Post
2006 USDM Impreza 2.5i single overhead cam.
There is a legacy version that uses TGV housings too. The legacy version will not bolt straight on the impreza TGV's.

TMS
Have you flowed this on a bench? I was looking around for one so I could flow it.
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Old 04-04-2007, 10:21 AM   #22
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well, an update from the shop...we have my designed shortblock coming together (parts being manufactured) and a BC 2.71 coming to be tested. Both will get numerous cam setups and at least one non-factory manifold tested. I don't know much about this mani as I didin't design it and it is being lent to the shop for testing.
I'll be running all of the testing as a large lab and will have a report to follow.

I'm still working on my manifold design to add another variable to the testing.
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Old 04-05-2007, 12:54 AM   #23
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Where on the same page as I just did a buy in with BC and I ordered a 2.7 kit with the goods for it as well. Inconel valves and such...
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Old 04-08-2007, 09:15 PM   #24
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Here is my new reverse intake manifold and FMIC, numbers and more testing to follow...

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Old 04-08-2007, 10:07 PM   #25
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wow, those runners seem a bit long, what turbo are you running with it? I'm curious what your results will be
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