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Old 06-19-2012, 05:48 AM   #1
STi MAN86
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Default Should I go to Bluch 2.5XTR?

Hey guys,

Just wanted to ask a few questions before I do anything..
Car is currently making about 370/380WHP at 24psi taping of to 22.5psi at top end... Current Turbo was rebuild due to rear main seal leaking oil about 4 weeks ago.

Everything was fine till recently it started to use oil again! Not sure why it happened!? Maybe it can't handle the high boost?

Anyways I was thinking about upgrading the turbo to a Blouch 2.5XTR what are everyone’s thoughts? Would I make more power with less boost or same power figures with less boost? Sorry if it's a noob question

Thanks for any input guys



Here is a log I did not that long ago 3rd gear pull
https://docs.google.com/spreadsheet/...2FQV0ZPUlY1Rmc
07STi
Build bottom end 2.5L
Stock heads 06STi Heads
TD-06H 60-1 8cm kinugawa Turbo
AEM Meth Kit
Custom CAI 73mm MAF, AVO Pod Filter
Hyperflow TMIC
Tactrix 3-Port Boost Control Solenoid
Omni 4bar map sensor
AP 3" Turbo intlet pipe
TGV DELETES
TBE 3" CES system Twin seperated DP
Headers GT Spec Heat wrapped UE
Walbaro fuel pump 255l
Injectors ID 1,000cc
Split fuel rails
Sard Fuel pressure regulator
ACT clutch kit stage 3
NGK 1 step colder plugs
ARP 11mm Head Studs
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Last edited by STi MAN86; 06-19-2012 at 06:16 AM.
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Old 06-19-2012, 05:04 PM   #2
timeXlost
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I think a Dom 2.5 would be a bit of a downgrade from what you are at currently. Look into a dom3
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Old 06-20-2012, 12:38 AM   #3
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Quote:
Originally Posted by timeXlost View Post
I think a Dom 2.5 would be a bit of a downgrade from what you are at currently. Look into a dom3
Looks like he has a 20G. Don't think it would be a downgrade, but from what I've read the best stock location turbo is the 1.5 XTR. Any bigger and it's good to go rotated.
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Old 06-20-2012, 01:12 AM   #4
STi MAN86
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No it's not a 20g its a gt30 compressor wheel has a 3' Turbo intlet

Would love to know what the dom3 does full boost in 3rd and 4th gear
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Old 06-20-2012, 01:20 AM   #5
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DOM 3 or 4
FP Green HTA or FP Red
500awhp capable turbos on E85 or race gas...

My personal experience is 430awhp at 25psi with an FP Green HTA on an internally bonestock 2011 STI....
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Old 06-20-2012, 01:52 AM   #6
STi MAN86
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My other quick question is I would should make same power levels that I am making now with less boost with the dom3 or 4 correct? So fuel knock shouldn't be a problem when reaching more power then I am making now?
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Old 06-20-2012, 04:15 AM   #7
STi MAN86
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Quote:
Originally Posted by jdpsearcher View Post
DOM 3 or 4
FP Green HTA or FP Red
500awhp capable turbos on E85 or race gas...

My personal experience is 430awhp at 25psi with an FP Green HTA on an internally bonestock 2011 STI....
Was that on pump gas or E85/race fuel?
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Old 06-20-2012, 02:33 PM   #8
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I had a Blouch Dom3 on my 06 WRX, it was a great turbo, hit full boost around 3500 RPM's, ran strong as hell. I don't think you can go wrong with it. I learned a lot from that turbo set up, primarily that I will always buy bigger injectors and a larger turbo than what I think I want. For the extra $100, go with the Dom4, you already have the supporting mods for the larger turbo and if you want more later you can always retune. It won't spool that much slower either, maybe 250 RPM's.
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Old 06-20-2012, 06:34 PM   #9
STi MAN86
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Cheers for the replies guys!

I wonder if my stock 06sti heads and cams will be restricted for 400whp? Any idea when they become a restricted?
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Old 06-20-2012, 09:37 PM   #10
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Not at all. The main thing heads and cams will do for your car is give you more top end power or move your plot to the right, all depending on what you do, how its done and what parts are used. For what you are doing, you can easily pull 400 WHP without any issues.
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Old 06-21-2012, 01:09 AM   #11
rexwagon02
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I have freshly rebuilt (by blouch) dom3 for sale, way cheaper than new.
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Old 06-21-2012, 02:10 AM   #12
jdpsearcher
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E85....
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Old 06-21-2012, 08:13 AM   #13
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^^^^Yes! If I had access to E85, I'd run that exclusively.
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Old 06-21-2012, 10:12 AM   #14
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Quote:
Originally Posted by STi MAN86
No it's not a 20g its a gt30 compressor wheel has a 3' Turbo intlet

Would love to know what the dom3 does full boost in 3rd and 4th gear
Well basically you should be looking at turbos above the 55lbs/min range since the 60-1 are old school 30R's. FP HTA Black or Red, ATP GTX series and the DOMs 3 and bigger.
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Old 06-21-2012, 11:11 AM   #15
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I would steer clear of a blouch turbo right now. They were putting out great turbos and making great power but as of late there turbo's have been real hit or miss. Some people are making great #'s and some people are making really lack luster #'s from what i've been reading and hearing. Its a gamble. I gambled and gt bit.lol. Made less power on a dom 3xtr than i was making on my OG Fp green. Be careful, there to expensive to not be sure of the quality.
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Old 06-21-2012, 01:05 PM   #16
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Quote:
Originally Posted by Slimsti View Post
I would steer clear of a blouch turbo right now. They were putting out great turbos and making great power but as of late there turbo's have been real hit or miss. Some people are making great #'s and some people are making really lack luster #'s from what i've been reading and hearing. Its a gamble. I gambled and gt bit.lol. Made less power on a dom 3xtr than i was making on my OG Fp green. Be careful, there to expensive to not be sure of the quality.
really, interesting...
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Old 06-21-2012, 01:27 PM   #17
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Our turbos are far from hit or miss, and our quality hasnt changed.
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Old 06-21-2012, 01:30 PM   #18
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Quote:
Originally Posted by STi MAN86 View Post
Hey guys,

Just wanted to ask a few questions before I do anything..
Car is currently making about 370/380WHP at 24psi taping of to 22.5psi at top end... Current Turbo was rebuild due to rear main seal leaking oil about 4 weeks ago.

Everything was fine till recently it started to use oil again! Not sure why it happened!? Maybe it can't handle the high boost?

Anyways I was thinking about upgrading the turbo to a Blouch 2.5XTR what are everyone’s thoughts? Would I make more power with less boost or same power figures with less boost? Sorry if it's a noob question

Thanks for any input guys



Here is a log I did not that long ago 3rd gear pull
https://docs.google.com/spreadsheet/...2FQV0ZPUlY1Rmc
07STi
Build bottom end 2.5L
Stock heads 06STi Heads
TD-06H 60-1 8cm kinugawa Turbo
AEM Meth Kit
Custom CAI 73mm MAF, AVO Pod Filter
Hyperflow TMIC
Tactrix 3-Port Boost Control Solenoid
Omni 4bar map sensor
AP 3" Turbo intlet pipe
TGV DELETES
TBE 3" CES system Twin seperated DP
Headers GT Spec Heat wrapped UE
Walbaro fuel pump 255l
Injectors ID 1,000cc
Split fuel rails
Sard Fuel pressure regulator
ACT clutch kit stage 3
NGK 1 step colder plugs
ARP 11mm Head Studs


The 2.5X-R and 3.0XT-R are smaller then the 60-1 turbo that you currently have. If your looking to improve spool this would be the way to go, but if your looking for more power then what you are making, look into the Dom 4.0XT-R, ATP35R or the FP HTA BLack
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Old 06-21-2012, 02:12 PM   #19
djc1827
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I plan on making 430-440whp w my 2.5xtr on a mustang dyno at about 24psi. A 3.0 would prob yield 460-475whp. Obviously higher on diff dynos. Turbo is capable of 10s but if your rebuilding the motor you minds well go 4.0+. Just remember that large step in turbo means you will break stuff constantly plus u have to upgrade your fuel system and you will have lots of lag but if you can rev her to 9k who cares
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Old 06-21-2012, 02:30 PM   #20
Dave D.
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Quote:
Originally Posted by djc1827 View Post
I plan on making 430-440whp w my 2.5xtr on a mustang dyno at about 24psi. A 3.0 would prob yield 460-475whp. Obviously higher on diff dynos. Turbo is capable of 10s but if your rebuilding the motor you minds well go 4.0+. Just remember that large step in turbo means you will break stuff constantly plus u have to upgrade your fuel system and you will have lots of lag but if you can rev her to 9k who cares
Change your mind about that hta68?
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Old 06-21-2012, 05:42 PM   #21
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Quote:
Originally Posted by djc1827 View Post
I plan on making 430-440whp w my 2.5xtr on a mustang dyno at about 24psi. A 3.0 would prob yield 460-475whp. Obviously higher on diff dynos. Turbo is capable of 10s but if your rebuilding the motor you minds well go 4.0+. Just remember that large step in turbo means you will break stuff constantly plus u have to upgrade your fuel system and you will have lots of lag but if you can rev her to 9k who cares
Quote:
Originally Posted by Blouchturbo View Post
The 2.5X-R and 3.0XT-R are smaller then the 60-1 turbo that you currently have. If your looking to improve spool this would be the way to go, but if your looking for more power then what you are making, look into the Dom 4.0XT-R, ATP35R or the FP HTA BLack
I think it's funny that you can even disagree with the people that make the turbo...

Good luck with it...I hope you can really push that thing that hard...little turbo's gonna be huffin!
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Old 06-21-2012, 08:17 PM   #22
STi MAN86
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Quote:
Originally Posted by Blouchturbo View Post
The 2.5X-R and 3.0XT-R are smaller then the 60-1 turbo that you currently have. If your looking to improve spool this would be the way to go, but if your looking for more power then what you are making, look into the Dom 4.0XT-R, ATP35R or the FP HTA BLack

Yeh right I didn't realize the dom3xtr was smaller then what i have all ready
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Old 06-21-2012, 08:20 PM   #23
STi MAN86
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Ron mention with the dom3 with 93/Meth I should see 420whp
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Old 06-21-2012, 09:51 PM   #24
fourmicah
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Quote:
Originally Posted by STi MAN86 View Post
Ron mention with the dom3 with 93/Meth I should see 420whp
Yes, you can. How hard do you want to push the turbo? I think the DOM3 would do fine at that power level, maybe even 450 WHP, but not much higher than that. Remember that you can push any set up really hard, but then you run into the chance that you will be breaking more stuff. I think you have a good set up to run 425-450 WHP with your current set up, but like I said, you'd be pushing it to it max efficiency.

If I were you, I would go with the DOM4 or similar turbo, upgrade your injectors to make sure you can run the fuel and run E85 all day long.
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Old 06-22-2012, 03:07 PM   #25
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The dom3 is good for more than 420. We're running ours (and it's the older dom3, not the new one) and pushing 462WHP/481WTQ on E85. Turbo was runing about 25 psi.

I think there is a lot more potential in your current setup.
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