Welcome to the North American Subaru Impreza Owners Club Friday June 24, 2022
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Built Motor Discussion

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 01-12-2022, 08:26 PM   #1
ChaudMasterFlex
Scooby Newbie
 
Member#: 286487
Join Date: Jun 2011
Location: NH
Vehicle:
2014 WRX
Blue

Default Turbo recommendation?

Could someone recommend a turbo upgrade? Iíve spent some time trying to do my homework, but Iím still not sure what to get. Goal is 400-450hp. Iíve seen the Blouchís, but there are a few variations. Iím just gonna copy and paste my setup from an old Craigslist add;

IAG stage 2 (tuff) short block
ARP head bolts
STI 12mm oil pump
Torque Solution pitch mount
Invidia catback exhaust
Tomei UEL(wrapped) header and up-pipe
Grimmspeed catted downpipe
Go Fast Bits hybrid BOV
KStech phenolic spacers
Cusco pulley kit
Kartboy short shifter and bushings
Cobb Accessport V3
Cosworth intake
ACT clutch
Process West Verticooler TMIC
Whiteline tie rods and ball joints
Godspeed lowering springs
Killer B high flow water pump housing
Perrin intake tube
1000cc injectors
AEM fuel pump
Killer B windage tray
Killer B pick up tube
STI oil pan
Defi boost gauge
AEM X-series wideband gauge
Steamspeed turbo blanket
GetADomTune coolant bypass mod
Autometer oil pressure gauge
Cobb boost solenoid
IAG AOS
SMY gauge pod
JCS custom a-pillar pod
Mirimoto LED headlight kit
Mirimoto LED fog lights
IAG TGV delete
Air pump delete
255/40R17 Nitto NT05 tires
* Registered users of the site do not see these ads.

Last edited by ChaudMasterFlex; 01-13-2022 at 10:03 PM.
ChaudMasterFlex is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 01-12-2022, 10:09 PM   #2
WRXXXED
Scooby Specialist
 
Member#: 432652
Join Date: Oct 2015
Location: Gap, PA
Vehicle:
2010 Subaru WRX STI
61K (Gray)

Default

You'll probably want to do some fuel upgrades to get to that range, ID1300s should be okay, idk what LPH fuel pump you have from AEM but it might be good, find a tuner and let them know your goals, they will be more than happy to discuss what will fit into what you want, personally a FP Black is a nice way to go if you want to stick with 93 and a highly boosted GTX3076 would work too but for something like e85, it's hard to say just off the list given, a tuner would be able to point you in the right direction more effectively
WRXXXED is offline   Reply With Quote
Old 01-12-2022, 10:28 PM   #3
K3rm1tth3fr0g
Scooby Specialist
 
Member#: 508105
Join Date: Nov 2019
Chapter/Region: NWIC
Location: Greater Seattle Area
Vehicle:
Link tuned 02 WRX
EJ205 20G-XTR JDM 6MT E85

Default

I would go rotated if you can. It will offer you many benefits. Ease of maintenance, spool, power, etc.

EFR 7163 is my fave rotated turbo for your power goal.

If you're staying pump gas the FP black should get you to 450WHP but at 450 you should probably be rotated. The FP red is also good, as is the 3.5XTR. The Blouch XTR turbos are ball bearing and the FPs come in journal or ball bearing. The FP blue will probably only hit your power goal on ethanol or maybe 93, but probably 400 would be your pump limit on a blue.

The BCP 500+ is journal bearing, but makes great numbers with good spool and response for its size and technology.

The GrimmSpeed BB500 just came out, and is very similar to the 3.0XTR in specs but has very little results with it posted yet.

There are lots of options - choose wisely.

And I like the 3071 more than he 3076 if you go with a GT30.

Last edited by K3rm1tth3fr0g; 01-13-2022 at 02:38 AM.
K3rm1tth3fr0g is offline   Reply With Quote
Old 01-13-2022, 12:14 AM   #4
JSR84
Scooby Specialist
 
Member#: 469585
Join Date: Jun 2017
Chapter/Region: W. Canada
Vehicle:
2009 STi
White

Default

If you donít care about spool, FP black will do you well. But it has its drawbacks, figment and pressure ratios to name a few, theyíre not my favourite if Iím honest. But I would second moving to a rotated setup if you have the cash for that. The EFRís are nice turbos, just donít overspin them. Iíve also been really impressed with the G Series. A G25 660 would get you to your power goals and retain very good spool and street manners.
JSR84 is offline   Reply With Quote
Old 01-13-2022, 06:57 AM   #5
ChaudMasterFlex
Scooby Newbie
 
Member#: 286487
Join Date: Jun 2011
Location: NH
Vehicle:
2014 WRX
Blue

Default

I guess I should have mentioned I'm looking for something plug and play at this point. I don't drive this car much (5000 miles since I bought it in 2017) so I'd like to stay under $2000 for a turbo. I kinda figured I should get a fuel kit first (ie; rails, fpr etc). Im staying away from E85 because thereís absolutely no where to get it where I live.

Last edited by ChaudMasterFlex; 01-13-2022 at 02:21 PM.
ChaudMasterFlex is offline   Reply With Quote
Old 01-13-2022, 06:59 AM   #6
ChaudMasterFlex
Scooby Newbie
 
Member#: 286487
Join Date: Jun 2011
Location: NH
Vehicle:
2014 WRX
Blue

Default

Quote:
Originally Posted by K3rm1tth3fr0g View Post
I would go rotated if you can. It will offer you many benefits. Ease of maintenance, spool, power, etc.

EFR 7163 is my fave rotated turbo for your power goal.

If you're staying pump gas the FP black should get you to 450WHP but at 450 you should probably be rotated. The FP red is also good, as is the 3.5XTR. The Blouch XTR turbos are ball bearing and the FPs come in journal or ball bearing. The FP blue will probably only hit your power goal on ethanol or maybe 93, but probably 400 would be your pump limit on a blue.

The BCP 500+ is journal bearing, but makes great numbers with good spool and response for its size and technology.

The GrimmSpeed BB500 just came out, and is very similar to the 3.0XTR in specs but has very little results with it posted yet.

There are lots of options - choose wisely.

And I like the 3071 more than he 3076 if you go with a GT30.
Yeah, I saw the Grimmspeed turboís but I would like to give them some time to see what people think of them.
ChaudMasterFlex is offline   Reply With Quote
Old 01-13-2022, 07:13 AM   #7
FuJi K
Scooby Guru
 
Member#: 3687
Join Date: Jan 2001
Chapter/Region: MWSOC
Location: St. Paul, MN
Vehicle:
MY99 GF4 JDM 6spd
NF Performance

Default

No E85.... that means larger turbo to hit your goals on pump gas. A simple rotated GT3582R on like 26psi will easily get you over 400whp and spool up faster than a stock location FPBlack. The largest stock location I'd go is like a FPGreen/PTE 55mm stock location upgrade. Anything after that I'd go rotated. You should up your injectors. You can keep your stock rails, but up the fuel press regulator to help your fuel pump. Get rid of that GFB BOV if it's leaking. You may need to convert to FMIC.

if you want 400whp, shoot for 450.
FuJi K is offline   Reply With Quote
Old 01-13-2022, 12:26 PM   #8
cboggess
Scooby Specialist
 
Member#: 30804
Join Date: Dec 2002
Chapter/Region: SWIC
Vehicle:
87 Yugo
Red

Default

Quote:
Originally Posted by K3rm1tth3fr0g View Post
I would go rotated if you can. It will offer you many benefits. Ease of maintenance, spool, power, etc.

EFR 7163 is my fave rotated turbo for your power goal.

If you're staying pump gas the FP black should get you to 450WHP but at 450 you should probably be rotated. The FP red is also good, as is the 3.5XTR. The Blouch XTR turbos are ball bearing and the FPs come in journal or ball bearing. The FP blue will probably only hit your power goal on ethanol or maybe 93, but probably 400 would be your pump limit on a blue.

The BCP 500+ is journal bearing, but makes great numbers with good spool and response for its size and technology.

The GrimmSpeed BB500 just came out, and is very similar to the 3.0XTR in specs but has very little results with it posted yet.

There are lots of options - choose wisely.

And I like the 3071 more than he 3076 if you go with a GT30.
I cannot recommend the FP products due the number of issues we've seen with them along with the rather lackluster support we had to deal with.

I can recommend the BCP X500+. We've done a number of them here, and have been happy with them.
cboggess is offline   Reply With Quote
Old 01-13-2022, 03:01 PM   #9
benflynn
Scooby Specialist
 
Member#: 515308
Join Date: Jun 2020
Default

Def want E85 if itís available.
benflynn is offline   Reply With Quote
Old 01-14-2022, 08:51 AM   #10
ChaudMasterFlex
Scooby Newbie
 
Member#: 286487
Join Date: Jun 2011
Location: NH
Vehicle:
2014 WRX
Blue

Default

Quote:
Originally Posted by benflynn View Post
Def want E85 if itís available.
I wish. Closest place is almost 200 miles away. Sucks because I live in a densely populated area too.
ChaudMasterFlex is offline   Reply With Quote
Old 01-14-2022, 08:54 AM   #11
benflynn
Scooby Specialist
 
Member#: 515308
Join Date: Jun 2020
Default

3 million people here, 1 E85 pump in the whole damn city, luckily itís one exit down from my office.
benflynn is offline   Reply With Quote
Old 01-14-2022, 10:20 AM   #12
K3rm1tth3fr0g
Scooby Specialist
 
Member#: 508105
Join Date: Nov 2019
Chapter/Region: NWIC
Location: Greater Seattle Area
Vehicle:
Link tuned 02 WRX
EJ205 20G-XTR JDM 6MT E85

Default

We have 3 pumps here in the whole state and one of them is guarded by armed soldiers.
K3rm1tth3fr0g is offline   Reply With Quote
Old 01-14-2022, 03:22 PM   #13
Thorium06
Scooby Newbie
 
Member#: 254372
Join Date: Aug 2010
Default

Quote:
Originally Posted by JSR84 View Post
A G25 660 would get you to your power goals and retain very good spool and street manners.
No it won't
Thorium06 is offline   Reply With Quote
Old 01-14-2022, 07:38 PM   #14
K3rm1tth3fr0g
Scooby Specialist
 
Member#: 508105
Join Date: Nov 2019
Chapter/Region: NWIC
Location: Greater Seattle Area
Vehicle:
Link tuned 02 WRX
EJ205 20G-XTR JDM 6MT E85

Default

Quote:
Originally Posted by Thorium06 View Post
No it won't

I mean it's a pretty good turbo but a 550 would spool better and make enough power for OP. Problem is getting a turbo kit for a G series for the WRX/STi but I don't know which gen chassis OP is using.
K3rm1tth3fr0g is offline   Reply With Quote
Old 01-14-2022, 10:07 PM   #15
JSR84
Scooby Specialist
 
Member#: 469585
Join Date: Jun 2017
Chapter/Region: W. Canada
Vehicle:
2009 STi
White

Default

Quote:
Originally Posted by Thorium06 View Post
No it won't
Wrong
JSR84 is offline   Reply With Quote
Old 01-15-2022, 03:23 AM   #16
Thorium06
Scooby Newbie
 
Member#: 254372
Join Date: Aug 2010
Default

Quote:
Originally Posted by JSR84 View Post
Wrong
Wrong
Thorium06 is offline   Reply With Quote
Old 01-15-2022, 09:04 AM   #17
Alistairh
Scooby Newbie
 
Member#: 268286
Join Date: Dec 2010
Chapter/Region: W. Canada
Location: Alberta
Vehicle:
2011 STi
Dark Grey

Default

I'm going to be doing a G30-660 on my built 2.5L with mild cams. Hoping for 400 mmmmaybe 450 on a conservative dyno with 94+Meth. 91+Meth is probably gonna be closer to 400. I think its a dynapak hub dyno I'll be on, so the numbers will be inflated.

If OP had E85 then there's a chance the G25-660 would almost hit 400, but Garrett got creative with how they rate the hp on the new G series to inflate their numbers. G25 however would have very good street manners of the turbos named so far and would be "fun" to drive even with a .82 hotside but I'd probably shoot for 1.xx.. I had a gtx2863 w/ a .82 hot side that spooled up lightning quick, but got choked for flow up top.

GTX3071/GTX3076 would flow more, but less responsive on the street. You are still on stock cams so that helps. my old GT3076 hit close to your power goal but with very aggressive cams on pump gas and wasn't all that fun to drive. The car was basically dead below 3k rpm.

Either way you'll want to go rotated. EFR has always interested me with their use of exotic materials in the compressor/turbine wheel to reduce rotating mass. Xona Rotor also sounds good with their XR line.

I didn't see what fuel you'd be using, but on 91 I think it'd be a challenge. Others have said you might need 1300cc injectors and I'd tend to agree. If you think you'll ever get E85 then 1600's or bigger would be my choice.

You may also have to do water meth injection to get extra octane, or run a fuel additive.94 or 98 octane makes higher power goals a lot easier, or at least a lot safer.
Alistairh is offline   Reply With Quote
Old 01-15-2022, 10:23 AM   #18
Waddlz
Scooby Specialist
 
Member#: 395275
Join Date: Jul 2014
Chapter/Region: RMIC
Location: Fort Lupton, CO
Vehicle:
2012 STi
SWP

Default

Quote:
Originally Posted by JSR84 View Post
Wrong
Wrong.
Waddlz is offline   Reply With Quote
Old 01-15-2022, 11:04 AM   #19
K3rm1tth3fr0g
Scooby Specialist
 
Member#: 508105
Join Date: Nov 2019
Chapter/Region: NWIC
Location: Greater Seattle Area
Vehicle:
Link tuned 02 WRX
EJ205 20G-XTR JDM 6MT E85

Default

Quote:
Originally Posted by Alistairh View Post
I'm going to be doing a G30-660 on my built 2.5L with mild cams. Hoping for 400 mmmmaybe 450 on a conservative dyno with 94+Meth. 91+Meth is probably gonna be closer to 400. I think its a dynapak hub dyno I'll be on, so the numbers will be inflated.

If OP had E85 then there's a chance the G25-660 would almost hit 400, but Garrett got creative with how they rate the hp on the new G series to inflate their numbers. G25 however would have very good street manners of the turbos named so far and would be "fun" to drive even with a .82 hotside but I'd probably shoot for 1.xx.. I had a gtx2863 w/ a .82 hot side that spooled up lightning quick, but got choked for flow up top.

GTX3071/GTX3076 would flow more, but less responsive on the street. You are still on stock cams so that helps. my old GT3076 hit close to your power goal but with very aggressive cams on pump gas and wasn't all that fun to drive. The car was basically dead below 3k rpm.

Either way you'll want to go rotated. EFR has always interested me with their use of exotic materials in the compressor/turbine wheel to reduce rotating mass. Xona Rotor also sounds good with their XR line.

I didn't see what fuel you'd be using, but on 91 I think it'd be a challenge. Others have said you might need 1300cc injectors and I'd tend to agree. If you think you'll ever get E85 then 1600's or bigger would be my choice.

You may also have to do water meth injection to get extra octane, or run a fuel additive.94 or 98 octane makes higher power goals a lot easier, or at least a lot safer.
Garrett didn't "get creative", they used BHP numbers like everyone else - because they're an OEM, that's just the numbers they're going to use. Also WHP varies WILDLY based on dyno so of course they're measuring at the crank.

Last edited by K3rm1tth3fr0g; 01-15-2022 at 11:11 AM.
K3rm1tth3fr0g is offline   Reply With Quote
Old 01-15-2022, 12:27 PM   #20
benflynn
Scooby Specialist
 
Member#: 515308
Join Date: Jun 2020
Default

I think the issue is the turbine wheel, it is a lil small on g25 but it flows a good bit more than a gt25. I think E85 would do it, I would go G30 if on pump. Well personally Iíd put a g30 turbine clone in a gtx3071.
benflynn is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 07:02 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2022 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.