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Old 10-11-2005, 09:57 PM   #1
damonmlime
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Default F.A.T stage 3

Is anyone here running the fat stage 3 kit? I bought a kit on ebay and I was just wondering what I should look for as far as performance. I've been pricing clutches and flywheels and I already have a stromung exhaust(I know I'll need 2.5" or bigger down the road but 2.25" will have to do for now.) I searched but I didn't really find anything except on their web site, but even that was pretty broad. All 3 stages are supposed to add 80-100 hp and that seems pretty odd to me. btw this is going on a MY00RS, mostly stock except for bolt ons. thanks Damon
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Old 10-11-2005, 11:03 PM   #2
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Sth III is a very nice kit. Def need a stronger clutch and do it BEFORE the turbo goes in.
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Old 10-12-2005, 12:01 AM   #3
Master2192
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They all add the same horsepower because they all run at 5-6 psi of boost. The only difference in the stages is either Intercooler or not, and turbo. The GT30R spools alot faster than the turbo in stages 1 and 2.

The stage 3 would give you more upgrade room. But your gonna need to lower the compression to go much higher in boost. Or spend lots of money on EM and ride the line of high boost/high compression that some people do.

Me, i'll get some EM and an STi shortblock before adding boost to my RS
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Old 10-12-2005, 04:10 PM   #4
damonmlime
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master2192, i hope youre right about the upgrade room. I want to get EM in the summer, by then I'll hopefully have an ej22t in there with custom pistons using my stock heads. What kind of hp could I make with that setup? If I do use the 22t will I even need EM? thanks damon
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Old 10-12-2005, 04:28 PM   #5
Master2192
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The GT30R can support well over 400+ WHP. Its strong enough to do 30 PSI of boost if needed.

I'm no expert on the 22Ts, but I think you can get atleast 400hp out of it. You may need more intercooling but thats another story.
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Old 10-13-2005, 09:51 AM   #6
maxiav
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Depending on how much power you want in the end... Say you want around 400WHP, just go with an STI shortblock.... you also get added torque from the bigger displacement...
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Old 10-13-2005, 10:00 AM   #7
PHATsuby
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^^^ding!

Ben
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Old 10-13-2005, 11:08 AM   #8
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If you want much more than 300 or so chp, then upgrade your tranny while your at it, cause yours won't last long at 400+chp
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Old 10-13-2005, 11:20 AM   #9
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^^^also ding! haha.

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Old 10-13-2005, 05:58 PM   #10
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I'm thinking right around 300chp would be plenty, I dont want to break my transmission, plus it's got to be streetable. I really dont want to buy the sti shortblock since I already have the 22t. Thanks Damon
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Old 10-17-2005, 09:01 PM   #11
damonmlime
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Wow, I've been reading up on the gt30r and it seems this will make all the power I'll need for now, I see that some people are running them on sti's.
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Old 10-17-2005, 09:23 PM   #12
PHATsuby
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30R is capable of nearly 400whp on pump. so yes, you should be covered

Ben
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Old 10-18-2005, 10:14 PM   #13
damonmlime
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Well, I just found out that the turbo is a GT25r and not the GT30 that the newer kits come with, is that still a pretty good turbo? How is it different than the 30 design wise? What about power? any help appreciated. thanks damon
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Old 10-18-2005, 10:33 PM   #14
Master2192
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Well, the 25R, depending on the model. has a maximum of 280 hp reported by garrett. That turbo will spool so fast you won't even know there is lag. I'd guess full boost by 2500 rpms if not sooner.

Kind of limits you on future upgrades unless you swap in a new turbo. Being lagless would be fun though
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Old 10-19-2005, 11:28 AM   #15
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Im also looking into the FAT Stage III Kit. Looking what comes with the kit, can someone tell me exactly what else I'll have to purchase to make all of this work safely?


I hope to run about 5-6 psi of boost on "daily" mode, and maybe have a high boost mode of about 10 psi. My goal is 300whp from all this.

What else would I have to invest in before putting in this turbo kit? (I know that I'll need a clutch , exhaust) but what about EM ?

Would the "Piggy-back" system they throw in the kit be enough? What kind of system is this anyway?
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Old 10-19-2005, 11:43 AM   #16
Caplin 2.5
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I too was looking into this kit for my RS but then i figured if i get a Forester XT motor swap fro 3k i ge 250hp for 1500 less. Then ima drop the FAT twins in 2 gtr30's = wet dream
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Old 10-19-2005, 01:03 PM   #17
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As for 300whp on a FAT 3 kit @ 10 psi. Hmmm.....maybe but I don't think so. Not with the piggy back they give you. You'll def need larger injectors for one.


As for the twins..........unless you're going for bling factor...don't bother. You'll get just as good performance from a single gt30 and it won't be as many headaches.
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Old 10-19-2005, 01:40 PM   #18
Assassin4457
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Quote:
Originally Posted by Tats
As for 300whp on a FAT 3 kit @ 10 psi. Hmmm.....maybe but I don't think so. Not with the piggy back they give you. You'll def need larger injectors for one.


As for the twins..........unless you're going for bling factor...don't bother. You'll get just as good performance from a single gt30 and it won't be as many headaches.
I know I will definitely need injectors (I forgot to mention I knew that) but which ones do u guys recommend? I saw in a few guys' setups they were using the WRX injectors. Will this be good enough, or should I go with some other aftermarket injectors?
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Old 10-19-2005, 05:52 PM   #19
leondal
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Let's see what I'm running here....

7 psi on a newer stock replacement clutch, stock transmission
with lower miles, and stock injectors with RRFPR, which gives
me way more fuel than I even need, even when I had it up to
8+ psi. This is with the FAT stage I, then I added my own
intercooler. No excessive knock, been running smooth for
over 50,000 miles now.....but that's with forged pistons.
I had to tune the fuel down, though, as it was running way
rich, and drowning the engine at higher rpms.
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Old 10-19-2005, 05:54 PM   #20
leondal
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I should, however, mention that I don't drag race this thing,
or launch it from a standstill EVER. I run it hard sometimes,
but I take good care of it, and it takes care of me.
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