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Old 12-14-2011, 12:49 PM   #1
neko
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Default Anyone use the smaller core ebay fmic kits? (GC FMIC questions inside...))

I'm looking for a solution for the intercooler issue on my newest toy, a '99 RS w/ej20g.

I could stay TMIC, using a 06+ FXT/WRX type core. I've borrowed one form a friend briefly to test fit, and its pretty good, but the BOV (at least on the WRX core) interferes with the idle air valve on the manifold, and other than that, a longer elbow on a STi-type y-pipe would get it fitted well, i think. However at probably $200+ for those parts, i could easily go FMIC as well.

I'd prefer a fmic for future use (short term plans: tuned ecu, oem 16g, sti inj, near 300chp will do me fine), however i'm also waist deep in plenty of other projects and would love to see this thing back on the road. So i'm guessing a FMIC would take me a bit of time to get on/functioning, and i would love to avoid having to cut/weld/do a lot of piping work.

So, with the background out of the way, i know people on here have used the CX racing core with good results. Anyone used the cheaper kits now on ebay with the smaller (7" tall) cores? do they fit in the bumper opening better? I'm not sure i need a 12" core that will get half covered by the bumper skin and see no air... But then i wonder if the piping will get in the way of the fogs (not a big issue, as long as i can still use covers..)

Lastly, going the total opposite direction (more fab)... Has anyone ever come up with an effective core setup using piping that travels on either side of the radiator up near the top? (instead of traveling through the fenders n whatnot all the way to the bottom). Kinda of a shorter shot? just run back the length of the engine bay, right to were typical FMIC lines run, but without the extra many feet of piping. Is there a way to do it without a new rad? (or at least able to still run a cheap common aftermarket subaru rad...)

Any advice?
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Old 12-14-2011, 01:33 PM   #2
TommyAtomic
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Quote:
Originally Posted by neko View Post
I could stay TMIC, using a 06+ FXT/WRX type core. I've borrowed one form a friend briefly to test fit, and its pretty good, but the BOV (at least on the WRX core) interferes with the idle air valve on the manifold, and other than that, a longer elbow on a STi-type y-pipe would get it fitted well, i think. However at probably $200+ for those parts, i could easily go FMIC as well.
The previous owner of my rhd gf8 tig'd up a plate to cover the stock bov location on a 02-04 looking wrx/sti tmic and relocated the bov to the other side of the tmic. Its a snug fit but it works well and has zero interference with the IACV.
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Old 12-14-2011, 11:34 PM   #3
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IACV's are over rated just rip it out.
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Old 12-15-2011, 12:29 PM   #4
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IACV's are over rated just rip it out.
maybe thats why you have cold idle issues my friend...
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Old 12-15-2011, 02:56 PM   #5
1995REX
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I was just wondering this to as i got a new motor and was shooting for more power and trying to dump the 90* turbo for a newer and larger turbo. I was wondering if the Ebay FMIC would fix that and if they were any good.
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Old 12-15-2011, 03:18 PM   #6
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The cores of the ebay fmics are terribly inefficient and are, imo, a poor choice.

But they have been selling them forever because average people don't know any better.
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Old 12-15-2011, 03:33 PM   #7
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Originally Posted by eg33GC
The cores of the ebay fmics are terribly inefficient and are, imo, a poor choice.

But they have been selling them forever because average people don't know any better.
How are they so much more inefficient than say something more expensive from a name brand? I have always been under the impression that intercoolers are all made very similar
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Old 12-15-2011, 03:34 PM   #8
neko
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The cores of the ebay fmics are terribly inefficient and are, imo, a poor choice.

But they have been selling them forever because average people don't know any better.
Yeah, but many other aftermarket cores aren't that much better, and the $1000 fmic's arent going to offer 5x better performance I bet. You are correct that there are better cores out there, but few use them.
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Old 12-15-2011, 03:37 PM   #9
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How are they so much more inefficient than say something more expensive from a name brand? I have always been under the impression that intercoolers are all made very similar
Amazon.com: Maximum Boost: Designing, Testing, and Installing Turbocharger Systems (Engineering and Performance) (9780837601601): Corky Bell: BooksAmazon.com: Maximum Boost: Designing, Testing, and Installing Turbocharger Systems (Engineering and Performance) (9780837601601): Corky Bell: Books

I would rather have the smaller 7" core with good endtank design and a better thickness than the terrible giant one with poor tank design and a profile that screams pressure drop.
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Old 12-15-2011, 04:39 PM   #10
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yup, read that book years ago. And yes, IC design isn't all the same. But more aftermarket companies use bar-and-plate cores that are almost exactly the same once you sit down n look at them. Just like aftermarket Evo fmic cores... very few are actually better than the oem core (even when they're much bigger). Unfortunately, the oem TMIC for the ej20g does in fact, suck.

Here's the deal tho (while i'll agree with your general points that ebay stuff isn't the best..): Getting my hands on a TMIC that will fit, plus BOV work to clear the iacv, plus a sti y-pipe to make the fit with the oem turbo better, would be close to if not more than $200. Not bad, but not cheaper than a FMIC. Still an option.
I can get a cheap FMIC kit for $170.

So yeah, i could probably find a good fmic kit (tho lots of the ones out there need fab work with a ej20g setup properly), for $500-1000, but is it worth it? I"m not sure the ebay kit wouldn't have sufficient (or quite a bit more) capacity to cool the 16-18psi i plan on running. I'm not after more than 300hp here, maybe more down the road, but i doubt it. (This is cheap race toy. I already have an STi and Evo that make more power.)

So, ultimately, i wanna know: Whats your recommendation, eg33GC? What kind of a setup do you run on your car(s)?

Last edited by neko; 12-15-2011 at 04:51 PM.
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Old 12-15-2011, 05:29 PM   #11
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I am not too involved with the 20G setup yet, but I am running the horrendous plastic pipe and aluminum black slanty.

I personally never want to use an ic when possible, but if I had to I'd get a good sized core and make my own endtanks, using a reverse manifold setup.

I think a alloy charge pipe, splitter, and spray has to be good enough to 300whp. The cfm is not the issue. And with a good setup, I think IATs could be acceptable.

I will likely do a small cored reverse mount in the future. And I sure as hell am not paying $150 for an alloy charge pipe.

Just keep in mind you are buying junk couplers and "bends". If you go into the ebay route not too concerned about fitment quality you should be fine
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Old 12-16-2011, 10:21 AM   #12
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So is the EJ20K STi TMIC or my ARC TMIC intercoolers any better than an the EBAY FMIC's?

Also any idea if this will allow me to upgrade to a non 90* turbo?

The second one is my primary concern.
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Old 12-16-2011, 10:52 AM   #13
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Originally Posted by 1995REX View Post
So is the EJ20K STi TMIC or my ARC TMIC intercoolers any better than an the EBAY FMIC's?

Also any idea if this will allow me to upgrade to a non 90* turbo?

The second one is my primary concern.
Well the IC you use has nothing to do with the 90degree inlet on our oem ej20g turbo's, it only bolts to the outlet. The prob with the ej20g manifold is that it sits closer to the firewall than the later manifolds. So you can't use as tall of a TMIC without changing the manifold (totally an option).
For instance the 06 WRX/FXT tmic is much shorter, but fairly wide. It does fit just barely in the avail space for a tmic.
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Old 12-16-2011, 07:40 PM   #14
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nab a V2 STi TMIC. More than sufficient for even Rob's 550 tune.
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Old 12-17-2011, 11:27 AM   #15
neko
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nab a V2 STi TMIC. More than sufficient for even Rob's 550 tune.
Well then send me one :P I'm only just south of ya by a few hundred miles...

Actually, i would consider it, except those slantly core STi tmic's are real uncommon...
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Old 12-18-2011, 03:14 PM   #16
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Well mine may be up for sale spring time as i may be going front mount if i do ill ensure to pm you if you're at all interested.
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Old 12-19-2011, 10:41 AM   #17
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Well mine may be up for sale spring time as i may be going front mount if i do ill ensure to pm you if you're at all interested.
you bet. if you remember, shoot me a pm.
I hope i'll have something finalized n happy by then, but who knows.
Leaning towards FMIC still. Cheapo ebay with a 7" tall core to limit the amount of bumper cutting i'll have to do.
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Old 12-20-2011, 02:56 PM   #18
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I have an FXT intercooler if anybody is interested in it.
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