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Old 04-24-2002, 06:14 PM   #1
Chapel
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Default are there any individual throttle body kits for EJ22/25s?

they would obviously be downdraught... but are they available?
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Old 04-25-2002, 02:28 AM   #2
scubaracer
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Old 04-25-2002, 10:50 AM   #3
ColinL
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scuba--- WHERE?

I don't see anything obvious over there.
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Old 04-25-2002, 01:51 PM   #4
inpreza kid
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cobb just offers a throttle body service. that means you have to send yours in to get modified. i wonder if the throttle body from the new H6 fits the MY00-01 ej25.
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Old 04-25-2002, 02:09 PM   #5
Keiho
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I don't think you guys understand what he's asking for...

And no, I haven't seen any for the EJ25 yet. I have seen a Blitz one for a Honda B series motor though, and that thing is beautiful!
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Old 04-25-2002, 02:35 PM   #6
PeterJ
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Default me too

I am also wondering about the H-6 throttle body. I'll probably go down to the dealer to take a look. It's a brand new engine design so who knows
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Old 04-25-2002, 03:29 PM   #7
ColinL
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I know *exactly* what the original poster wanted, and I know that Cobb Tuning doesn't offer one.

individual throttle bodies, or some other method of replacing the stock intake manifold, is the only way the EJ25 is ever going to make real high RPM power.
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Old 04-25-2002, 04:27 PM   #8
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Yes there are kits. I found one in the UK. I seriously thought about running one, but there are some challanges with the H4 setup. Trying to get the throttle rod or line between the 2 did not look fun. But of course I dont have a machine shop and my service. If I did, it would be cake.

The company was called KVM? KMV? something like that. I got found it doing an internet search for throttle body injection.
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Old 04-25-2002, 06:04 PM   #9
Keiho
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ColinL: Sorry, should've been more specific, I knew you knew what he was asking about.
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Old 04-26-2002, 07:18 AM   #10
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i read this article on another subaru board. it was done to an EJ22 engine though. http://pub5.ezboard.com/fthebackyard...icID=586.topic

Re: EJ22 motors Upper engine Cleaner
--------------------------------------------------------------------------------
i found to get my car to run smooth, and i mean really smooth!
I did that throttle body mod thingy. Takes about 30 mins and is well worth it. Smoother power delivery, and smoother idle, as well as a little more get-up-and-go!


-Remove your throttle body

-Get a conical aluminium grinding drill bit/dremel bit

-Grind the lip of the throttle body where the plastic induction pipe joins on. Grind until the lip is knife edged. (ie. get rid of the flat restriction of the end of the Throttle Body)

-Then with sandpaper (beginning with rough and going to very fine) sand the inside of the throttle body and the lip until super smooth. (you can actually get a shine off mine )
Don't touch the butterfly as it is setup for smooth idle etc.

-For a little more power get a little hose connector and link up the two pipes that run the coolant water through the Throttle body, so they bypass it. (Allows the air to be a little cooler)

-Clean the Throttle Body carefully, metal shavings de get caught around the butterfly, so make sure you get it all.

-Refit Throttle Body.

While you do this reset the ECU, just for the sake of it, car will run smoother after a reset too!

you will find it runs smoother and you will have a tiny little more power.
George Liberty LX - AWD - A Wicked Doughnut
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Old 04-26-2002, 08:02 AM   #11
sohc_boy
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u could try chking out twm, they do individual t/b's for hondas and i know they do a lot of weber kits so if they have manifolds for the suby they would be able to help u out. also u do know that u will probably have to go to some sort of fuel management to control individual t/b's right? also if i remember i saw some crazy intake manifolds on spo's site a long time ago made by syms for n/a subies they weren't for individual t/b's but they sure looked impressive.
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Old 04-26-2002, 09:09 AM   #12
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has anyone attemted or heard of anyone attempting to put a SVX throttle body on.

quoted from a website i read this about the svx throttle body
Quote:
The twin throttle body flows over 900 CFM. Thatís enough for about 675HP
http://home.mgfairfax.rr.com/svx/faq/
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Old 04-26-2002, 02:29 PM   #13
RageHardIntoTheBendies
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I'd say for some more N/A power it would be far easyer/Cheaper to have a new Intake manifold fabbed up. Something with shorter runners and a real intake plenum would be great.

Similar to this.
http://www.sdsefi.com/air12.html
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Old 04-26-2002, 04:09 PM   #14
sohc_boy
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pretty sure that's what i saw on spo's website awhile back, it was made by syms. is there a us site for syms? i have looked in the past for more info on syms on the net but didn't find to much.
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Old 04-26-2002, 08:55 PM   #15
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do you want individual as in.. F1 style?

Brad
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Old 04-26-2002, 11:34 PM   #16
ColinL
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individual as in, it's a four cylinder so there should be four throttle bodies!

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Old 04-26-2002, 11:38 PM   #17
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my friend did that to his 260z.. it didn't help AT ALL!!!

he had the throttle plates come straight off the head. with those velocity stacks, that were probably too small to help. My guess would be that it would actually hinder a cars performance does to the loss of intake velocity.

Brad
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Old 04-27-2002, 10:26 AM   #18
ColinL
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assuming that is true, here's a few possibilities for what happened:

a) weber DCOE carburetors are extremely tuneable which is a good thing, but when you don't know what the hell you're doing it is also a very BAD thing. so maybe your friend had no clue how to set his up right. most people don't!

b) velocity stacks operate over a narrow RPM range. if your friend had velocity stacks tuned for 6000-8000 rpm and he still had the stock 2.6L cams, pistons, etc. then guess why this isn't a good match. then again, even if he had a complete matched setup see A) above.
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Old 04-28-2002, 12:21 AM   #19
Patrick Olsen
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Quote:
Originally posted by STiTuner
do you want individual as in.. F1 style?

...

My guess would be that it would actually hinder a cars performance does to the loss of intake velocity.
Sooooo, they hinder performance, but F1 (the showcase for the most advanced internal combustion engine technology) uses them because....???

Pat Olsen
'97 Legacy 2.5GT sedan
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Old 05-12-2002, 05:54 PM   #20
tonytiger
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There is this one thread open which has got ITI. IT's here . It has also couple of pictures.

However, what I'd like to know is where the TBs get their air from? Will the air be sucked under the hood - hot air?

Another thing about the ITI is the short lenght which directs the resonance pulses operating RPM range very high up. This way a fairly low revved engine will suffer from it.

In F1 these both factors are gone, because of the engine location design.

How can you make ITI? What parts do you need? It doesn't look so bad

I probably figure out some more questions, but above is a few for now...

Thank you.



tony
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Old 05-12-2002, 08:42 PM   #21
Section 8
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You can take air from under the hood, or preferrably fabricate air boxes around each bank and supply them both with cold air from a scoop somewhere.

cheeRS,

Greg
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Old 05-13-2002, 08:10 AM   #22
MY99 2.5GT
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Ram air has been discussed before but I feel the only way to build an effective ram air intake is to take the stock hood scoop off and design one specifically for catching air. (Section8 I wasn't trying to say you were suggesting ram air).

I still don't believe you would see massive gains from a direct throttle body fed pannel style filter box that is open to a custom birdcatcher style scoop. However it seems like the engine would run smoother and flow better specifically at high speed high rpm driving. There again though if the throttle body chops that air up and the intake manifold chokes your probably not going to be much better off.
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