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Old 10-02-2001, 07:16 PM   #1
Impreza25RS
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more mods coming soon!!

Default Intakes for MY98RS?

Okay Im getting screwed by JC Sports..yes surprise surprise but I contacted the credit card company and all is good but I still have no intake! I was wondering what my options were and what everyones thoughts are. Im not into the DIY method by the way. I have seen the Accruit Performances intake and it looks sweet so Im leaning towards that right now. Thanks for the help!
Kyle
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Old 10-02-2001, 11:06 PM   #2
beethoven
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Me too! Me too!

What are the options for us '98 owners?
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Old 10-02-2001, 11:24 PM   #3
Angel
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Weapon R makes intakes for 98. My BF had one for his RS.
Tara
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Old 10-03-2001, 01:24 AM   #4
2.52G
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weapon R has a good intake but if you get one don't get the dragon airfilter, I blew my mass airflow sensor comming home from Atlanta, I'm from Pa and it sucked.
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Old 10-03-2001, 11:48 AM   #5
kelley nelson
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It's not that hard to adapt a '99 intake for use on a '98. The MAF bolt pattern is the same, you just need to tap an extra fitting into the tube that the '99 doesn't have. You can probably find a local machine shop or garage who will do this for you.

I imagine if a group of '98 people got together they could make it worthwhile for some vendor to make up a batch of intakes too.
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Old 10-04-2001, 09:44 AM   #6
RaceCarRiot
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ah yes...weapon-R...makers of fine stickers and license plate brackets...

sadly it looks like i'll have to go this route as well, since JC decided to close up...many MANY months after i ordered my intake...they finally charged me for it on my last cc statement, and suprise! no intake!!...

well, i suppose if it wasn't because of the problems i had with JC, and my desire to let the world know, i would have never found i-club...ah well...
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Old 10-04-2001, 01:24 PM   #7
kelley nelson
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Larry Ganz sells most of the parts you need to build a PRM-based intake. I think the missing part of the equation from him used to be the J-tube.

Don't use a weapon-R. In dyno tests it turned out to be the worst.

I'm building an intake for my '98 RS using a RalliSpec j-tube with the extra fitting welded in, PRM filter, katboy MAF adapter and misc clamps, silicone tubing and bracketry.
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Old 10-05-2001, 09:55 AM   #8
jerome02rs
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Allright, I'll take the plunge! Since no manufacturer really seems to be making what you MAF owners want I'll do it. But I need to know a few things first:

1) Would you rather have a cold air box that houses the filter or just a heat shield? Bear in mind the price difference would be something like $50- $75. The cold air box could be molded fiberglass, molded carbon fiber or formed and welded aluminum.
2) Would you rather have a mandrel bent j tube style intake or a plenum that replaced the factory airbox behind the throttle body. The plenum would be made from fiberglass, carbon fiber or formed and welded aluminum. The plenum would not be a square box but a fairly complicated fully radiused enclosure. Again consider the price. A carbon fiber plenum and cold air box would look great but really wouldn't have any significant performance advantage over molded fiberglass- it would just be a little stronger and lighter. Aluminum would be the heaviest but probably the most durable.
3) I would need one individual to be a test pilot- someone that lives in the Boulder/Denver area. This person would receive an intake for a greatly reduced price provided they were willing to dyno it so the rest of the people would have some actual numbers. This third point is crucial because if I don't have an actual car to fit it to I won't make them.
4) These intakes could be made on a custom one off basis. This means I can provide whatever features you want in terms of construction materials, brand of filter (I'd recommend ITG for foam and K&N for paper), etc. However, the more that are made in one particular style definitely has an effect on price.

I've been burning the midnight oil on this one for a while now and I've pretty much got it figured out so If you folks want this to happen please let me know. I already have a vaccum bagging setup already to make the carbon/fiberglass parts and have access to one of the best machine shops in the country as well for any CNC parts I would need to have made. You can view some of my work on my webpage.

I'm sure I'll get lots of questions on this so fire away and I'll answer them as best as I can.
Jerome
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Old 10-05-2001, 12:20 PM   #9
RaceCarRiot
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ooooooh! i want one!!

finally...!

are there any differences between a 98-style intake and something that would fit my 1.8?
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Old 10-05-2001, 03:05 PM   #10
bensonwrx
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I do have a JCS intake. I like the design, but CobbTuning design is also ideal (K&N cone, or PRM filter). The one thing I like changing is the material. My current tube is steel I think, so Aluminum is what I'd prefer.

Let me know too on prices and availability

-Alan (Another MY98 Owner)
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Old 10-05-2001, 05:53 PM   #11
AJ711
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i'm partial to the Ganzflow style CAI... and i'm trying to figure out myself how i might be able to fabricate a DIY kind... personally... i'm probably putting an Amsoil filter in and taking the silencer out... but if someone could figure out how to make something like Larry's that's MAF friendly (my main concern, don't want to blow that)... i'll gladly take one...

AJ
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Old 10-05-2001, 07:43 PM   #12
Impreza25RS
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more mods coming soon!!

Default 98 intakes

Im going to order mine from Accurit Performances this week so as soon as I do the install Ill let all the 98 owners know how it goes. Hopefully I wont run into any problems with the MAF which is my biggest concern.
Kyle
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Old 10-06-2001, 12:09 AM   #13
bensonwrx
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Hey Kyle,
Is that intake you are gonna order looks like the JCS type or Cobb one? I assume it's aluminum made? Steel pipe can become quite hot (especially on summer).

Definitely let me know

-Alan (Another MY98 Owner)
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Old 10-06-2001, 12:33 AM   #14
jerome02rs
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Here's the scoop-
I could make an intake with a j bend aluminum tube, aluminum heat shield, MAF adapter and K&N filter. Personally, I'd rather not do that because:
1) Larry already sells everything you would need to make this setup
2) I feel that it would be unproffesional to sell what he already markets plus I don't want to make another product that is just a copy of what you can already buy. It simply doesn't benefit anyone.

That said, I would make available a version that has an aluminum plenum (instead of the j bend), fiberglass cold air box, MAF adapter and K&N filter for around $350 to $375. Change the aluminum plenum and fiberglass cold air box to carbon fiber and add around another $100. At this point pricing is my best guess until I make the prototype. I have figured out a way to mount the MAF to reduce vibration to a minimum though.

I can get started on this right away but I would still need a test subject though!

As for the MAP cars, I believe the best intake is to keep the panel filter but replace the factory plenum and duct it straight into the fender wall. No cold air box is necessary- it would just add weight and complexity. Unfortunately, this system won't work with an MAF- I'm pretty sure you'd ruin MAF's faster than you could buy them!

Jerome
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Old 10-06-2001, 02:11 PM   #15
Impreza25RS
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Default

Alan,
Yes its the JCS style with the j-bend aluminum tube and K&N style filter, I believe the price was 170. you can pm Accurit Performance with any questions and they will also send you a picture. I spoke with them the other day and they were great to deal with. As far as the actual product is Ill let you know in two weeks when it gets here!
Kyle
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Old 11-03-2001, 03:24 AM   #16
bensonwrx
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So any news?

Also, I wonder if anyone can walk me through the DIY for CAI...since I need to get parts, especially the J-Tube...who to contact? Larry?

Maybe someone can actually make one and I will buy it! I need to replace my JCS intake soon. Thanks alot ppl!

-Alan (Another MY98 Owner)
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Old 11-03-2001, 01:53 PM   #17
elemental
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Default check here

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Old 11-03-2001, 05:21 PM   #18
Peaty
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Old 11-03-2001, 06:06 PM   #19
ShortyDCT
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peaty - how does your process differ if done on a my98 obs ?
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Old 11-03-2001, 06:09 PM   #20
Peaty
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AFAIK it should be the same except I don't know if you have the type of torque box (the one behind the throttle body) that can be opened. Mine had a second air filter in it that I replaced with a gasket. Other than that it should be the same I think.

Peaty
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Old 11-04-2001, 04:24 AM   #21
bensonwrx
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Peaty,
Yours truly look nice. I on the other hand prefer something that goes into the fender 'now'. My JCS intake is doing just fine, except for the lean problem at high rpm. Speaking of the plenum, MY98 has a different type, which is an empty black box. I will definitely prefer something similar to Cobb CAI, if not exactly the same.

On the other hand, I may just turbo the beast... yea it cost alot, but this idea came to my mind after I consider the budget for my N/A project:

- Current JCS steel made intake ($250+)
- Getting aluminum J-tube to replace JCS Steel tube. (Rallispec or Weapon-R)
- Getting S-AFC to correct the rich/lean issue.
- Getting EGT and A/F meters to work w/S-AFC effectively.
- Getting A-Pillar to mount that thing on.
- Getting Kartboy S-AFC mount.

This setup is COOL sure, if I know how to install it avoiding extra labor, then understand how to fine tune it...not to mention is the above setup will cost around $1k...the increase hp/torque may not be worth the spending?!

Don't get me wrong, the setup is ideal, just too expensive for N/A setup. If somehow I can get a great deal on those, you bet I will go for it! I already spent too much lately (UD Pulley, Better rotors/brake pads, Prodrive wing, Stromung exhaust, Getting Mid-Pipe, Toyo T1-S, P1 Gold, Prodrive WR, and other expensive stuffs).

-Alan (Another MY98 Owner)
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Old 11-04-2001, 09:50 AM   #22
Peaty
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Actually now mine does go into the fender. If you look at the bottom of the page I've modified my intake:



This keeps the Plenum and is safe for my MAF. It's also good to do this to the airbox:

details - http://www.scoobymods.com/mods/impreza/silencer.php





Something else that helps a little too.

Details - http://www.scoobymods.com/mods/impreza/bumpervents.php





No matter what though, you are right air is best gotten from the fender. Did some testing and it's pretty hot under the hood. Getting air from under there is a bad idea

http://www.scoobymods.com/mods/impreza/thermal.php

Peaty
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Old 11-05-2001, 01:04 PM   #23
cakagan
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Exclamation

Jerome-

I live in Denver and I've got a bone-stock '98 RS (Phase 1.5) that is begging for an intake. Email me about this.

-Chris
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Old 11-05-2001, 06:29 PM   #24
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Default Hey Peaty!!

So did you notice any gains when you but the stock box back on? I cut the first box of f the throttle body to accept a 3 inch tube with a 90 degree bend going into a 3 inch steel bend which (45 degree) going in the MAF and a rective filter lined up with the 2nd hole in the fender. Feels like there was a gain.
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Old 11-06-2001, 02:44 AM   #25
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Hey guys,

The pipe bender says I can now get what used to be the JCS intake tubes for MY99, and for MY00+ and sell them for $100 (unpainted). I can also try to get the 98 intake tubes later on, but the 99 and 00+ are what are available right now I am told. They will be under my own brand, ScoobyRacing intake tubes.

I also have the other parts to add to the tube at www.imprezars.com/product2.htm#filtermaf and I'll include the two silicone adapters and hose clamps if you order both the J tube and the cone filter conversion kit. I have to add the J tubes to my website and pick them up from Denver, but you can also email me to get one ordered now. You supply the vaccum line for now.

I also have an intake for the 98 and 99 which uses the stock air plenum and works very well without an S-AFC which you can see at www.ImprezaRS.com/shoppingcart.htm (which use authentic kartboy MAF adapters).

You should be able to cut the JCS tube shorter to use the PRM Racing air filters and MAF adapters that I sell, along with a 45 degree bend I sell to run from the PRM filter into the inner fender (when you order a PRM filter and a stage II upgrade, I know to sub a 45 degree bend in place of the 90 that comes with the stage II).

I haven't studied the JCS tube to see if it needs to be cut as much as the weapon-R or not when doing this. The weapon-R when cut 3.75" shorter allows you to connect the PRM filter and run the 45 degree bend into the front hole of the inner fender!

Thanks!

Larry
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