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Old 07-26-2000, 10:18 PM   #1
tulit
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Member#: 338
Join Date: Sep 1999
Chapter/Region: E. Canada
Location: Toronto
Vehicle:
09 STi
White

Post ISR Intake

I got the new ISR intake on.

Some notes on it so far :

a) its bolted to the intake manifold. The whole thing is really rigid. I had to make sure there was enough clearance around the filter so that if the engine torqued, it had room to move. should be good for MAF equipped cars.

b) you only really start hearing the intake suck air in above around 4500 rpm. its somewhat noticable.

d) the promise of the stock plenumn making sure the engine doesnt run rich doesnt seem true. it runs pretty damn rich from about 4000rpm up to redline. idle-~4000 actually seems to run a little bit leaner. Looks like a AUX fuel computer will still be needed (however, I haven't really given it much time yet). I did a real quick (and thus, half-ass) job of resetting the ECU. I will have to go back to my stock intake on friday when i bring my car into the shop, so ill see how much richer this intake really runs (as i didnt pay much attention to my A/F guage before hand).


f) Now to the good stuff. DEFINATE gain in both low/high end torque/power. It pulls a lot harder throughout the whole range. This I didnt expect (suspected same/slight loss in low end). Leaning the top end out a bit more will yield even more results (hopefully - will try this later).

g) I had to cover the side hood vent again. Its right above where the filter is, and if it rained, it would be going straight onto the filter. Some kind of spaced blocking plate like some have done might be my next step.

h) A cold air box will definately help. It gets pretty toasty warm under there. Ill see what I can make up from some acrylic.

Overal very good design.

More to come soon.....

<img src=http://rzsoft.com/subaru/DCP00161.jpg>
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Old 07-27-2000, 01:26 AM   #2
ImprezaRS dot com
over boosted again
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Join Date: May 2000
Chapter/Region: RMIC
Location: Colorado Springs CO USA
Vehicle:
2015 Forester 2.0 XT
2005 2.5 RS, 2013 Tribeca

Post

You coulda gotten an intake like mine for under a $100, and added a K&N or AMSOIL airbox filter later, for a total of about $150 - and had a cold air intake from the start. Now you have to make a cold air shield/box
http://www.i-club.com/ubb-files/Forum2/HTML/001682.html

Bummer...
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Old 07-27-2000, 04:46 AM   #3
Jay_UK
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Member#: 296
Join Date: Sep 1999
Location: Derby, Derbyshire, England
Cool

Hey guys..

It amazes me the number of different makes and styles of intake systems that there are available...

Majority of them are just the same.. a straight or bent piece of pipe with a filter on.. is there really that much difference ?

Larry.. do you have a filter at the end of your intake system ? or use the filter just before the throttle body ?

J.

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Old 07-27-2000, 04:59 AM   #4
Templar
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Member#: 483
Join Date: Nov 1999
Chapter/Region: South East
Location: A twisty road not near you.
Vehicle:
2010 RSV4
Aprilia Racing Black

Post

This is the intake that I made for my car, and yes the cold air box does help. http://208.9.184.110/MembersList/Vie...m?MemberID=443


[This message has been edited by Templar (edited July 27, 2000).]
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Old 07-27-2000, 07:49 AM   #5
tulit
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Member#: 338
Join Date: Sep 1999
Chapter/Region: E. Canada
Location: Toronto
Vehicle:
09 STi
White

Post

Hi Jay.
The difference with this intake and many others is that this one keeps the stock plenumn (was suppose to relieve the need for a fuel computer).

Larry, I liked the look of this one. Plus I work a lot with acrylic so it wont be much of a problem to make a nice cold air box. I paid around $150 US all said and done for mine too...
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Old 07-27-2000, 03:09 PM   #6
Yotsuya
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Jack Soo Fan Club

Post

I've dropped to 20 MPG going to work thanks to that intake. But that's in heavy stop and go traffic. The few times I get up to high RPMs, though, it's not bad.
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Old 07-27-2000, 03:28 PM   #7
8Complex

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Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
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04 FXT
Red

Post

Well while everyone is posting their own versions of MY00 intakes, I guess I'll post up mine too. <a href="http://8complex.mwic.org/intake" target="_blank">Pics and description here</a>.

Might I also add that I did it for free?

My guess is if you wanted to do it, you could get one of those 90 silicon hoses kinda like I used for probably $20 and cut it down to about 75 or so like mine is.
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Old 07-27-2000, 09:08 PM   #8
Memnoch
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Talking

ImprezaRS how is the car running now with that aluminum pipe? Isn't it warming up the air that goes thru it when the engine bay's hot? Any difference between the pvc tubing and this one?

I tried finding some pvc tubing like that on my local home depot, only 2" and 3" tubing and only on beige/white argh. Oh well..
 
Old 07-29-2000, 12:53 AM   #9
ImprezaRS dot com
over boosted again
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Join Date: May 2000
Chapter/Region: RMIC
Location: Colorado Springs CO USA
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2015 Forester 2.0 XT
2005 2.5 RS, 2013 Tribeca

Post

Jay_UK,

I have the hood scoop open, and hood vents open with NickCat spacers, so the intake on the highway barely get's warm. When it get's hot in city driving, the cold air is passing through it so quickly that it barely heats the intake charge. It runs great!

The filter is in the stock airbox, and I have a hi-flow AMSOIL filter in there.

Memnoch,

The home depot PVC intake at 3" is too big to fit into the hole in the the inner fender, and the 2" PVC internal diameter is more restrictive than the 2.5" aluminum tubing I am using now.

I have parts for 12 intakes arriving next week, and only 10 of them are pre-sold. I also have the tubing for 6 black PVC intakes in stock. You can email me if you are interested in one.

Here is more sale info at http://www.i-club.com/ubb-files/Forum2/HTML/001682.html and a review at http://www.i-club.com/ubb-files/Foru...ML/003505.html or you can visit my web site at www.ImprezaRS.com

Larry
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Old 07-29-2000, 11:17 AM   #10
STi Sev
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Member#: 2876
Join Date: Nov 2000
Location: South San Francisco, CA.
Vehicle:
99 Impreza
Rally Blue Pearl

Post

blueeeeeeeeeeeeeeeeeeeeeeeeeeeeee..
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Old 07-29-2000, 11:28 AM   #11
tulit
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Member#: 338
Join Date: Sep 1999
Chapter/Region: E. Canada
Location: Toronto
Vehicle:
09 STi
White

Post

haha! knew you would say that
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Old 07-29-2000, 05:11 PM   #12
spshultz
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Member#: 1415
Join Date: May 2000
Location: Anytown, USA
Vehicle:
2005 OBS 3.0R
'12 SantaFe

Post

8Complex,

I like your setup. It reminds me of the (I believe) old Chevelle setups and the "shaker?" hood scoops. But something that the fast Chevelles used to have was a vacuum operated door on their hood scoop where under WOT or maybe it was near WOT the door/flap would open to let fresh air in, but in any other condition the door/flap would remain closed to suck in air from the engine bay. (I also might just be talking out of my rear on this one) I don't have the technical know how to do it but it sure would help on those rainy days when all you want to do is get from point A to B without drowning out the engine.

Anyway, just some ramblings from a new guy.
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