Welcome to the North American Subaru Impreza Owners Club Wednesday November 20, 2019
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo)

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 02-25-2019, 05:02 PM   #51
frugalrhombus
Scooby Newbie
 
Member#: 494291
Join Date: Nov 2018
Location: Broward County, FL
Vehicle:
2019 STI
Dark Gray

Default

SO I also have a 19 STI and the dudes doing my work have been telling me to be careful because they have already heard of 2 cars with the new pistons (I think one was a 19 and 1 was a 18 RA) that were both running bigger turbos on stock internals and had a piston fail except it was a cracked skirt that took the head with it on both of them.

So since it's my every day driver, I stopped at 357/411. Am I being too careful?

Edit: Just realized you were the same dude I was talking to in the other thread lol. I'm sort of at a crossroads now, I LOVE the way the car drives and the power band feels currently but I also want to make more power. I hadd someone at a meet the other day say that once you uupgrade the turbo it really completely changes it and (in his opinion) makes it less fun because you lose a lot of the quick spool and lower end power.
* Registered users of the site do not see these ads.
frugalrhombus is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-25-2019, 07:00 PM   #52
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

James, I'm uber jealous man.

Nice work so far on the build. Overall, how would you rate the "ease of wrenching"
Quote:
on the STI? I have built several motors in the past, so I know my way around car engines and bays...however, some of my previous projects (300ZX) were a nightmare to work on. The Subbies easier in your opinion?

Also, I hope it's true what you said about the Type RA motors holding up to 500whp. If true, it will be nice to maintain the stock block for a bit.
It was not fun, wasn't a nightmare but was not fun. Everything I installed I ran into clearance issues and had to move this or that. Next time I'll pay someone to do this for me. Here is a photo of just exhaust and secondary pump parts that get pulled off. I pulled I'm guessing 100-150lbs worth of parts.
As for power I'm shooting for 400+ pump and 450+ E85. I do not daily my car and do not plan to beat the **** outta it. I have my fingers crossed and hope to get many miles outta this build.

james-30 is offline   Reply With Quote
Old 02-25-2019, 07:06 PM   #53
greygonzalez
Scooby Newbie
 
Member#: 461647
Join Date: Jan 2017
Location: Trinity, FL
Vehicle:
209 STI
ISM

Default



Here is something to make you feel better too about the 19+ block
greygonzalez is offline   Reply With Quote
Old 02-25-2019, 07:10 PM   #54
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

Quote:
Edit: Just realized you were the same dude I was talking to in the other thread lol. I'm sort of at a crossroads now, I LOVE the way the car drives and the power band feels currently but I also want to make more power. I hadd someone at a meet the other day say that once you uupgrade the turbo it really completely changes it and (in his opinion) makes it less fun because you lose a lot of the quick spool and lower end power.
This is why I went with the BCP X500+ turbo. It spools as fast if not faster then factory turbo. Also going with ELH and keeping as much heat inside the exhaust as possible will help with quicker spool as well. Also turbos LOVE ethanol. It'll help with detention and you'll make more power obviously
Ive read guys running high 3's to 400 hp and being fine. Keep your power level where ever you are comfortable. 357whp is more then enough power to get yourself thrown into jail. lol
james-30 is offline   Reply With Quote
Old 02-25-2019, 07:12 PM   #55
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

Quote:
Here is something to make you feel better too about the 19+ block
You are the 4th guy ive seen/talked with pushing their 2019 into the 500's on stock internals. curious to see how long she holds it. Thanks for posting.
james-30 is offline   Reply With Quote
Old 02-26-2019, 11:03 AM   #56
xX_STI_Xx
Scooby Newbie
 
Member#: 493470
Join Date: Nov 2018
Vehicle:
2019 STI
Crystal White Pearl

Default

Quote:
Originally Posted by greygonzalez View Post


Here is something to make you feel better too about the 19+ block
Is this true? If so, f**k yeah!!!

Makes me feel ALOT better about my 2019. I was already thinking of building a EJ25 engine before purchasing the car to have as a "ready motor" in case of catastrophic failure, but this makes me feel a bit better.
xX_STI_Xx is offline   Reply With Quote
Old 02-26-2019, 12:27 PM   #57
frugalrhombus
Scooby Newbie
 
Member#: 494291
Join Date: Nov 2018
Location: Broward County, FL
Vehicle:
2019 STI
Dark Gray

Default

Quote:
Originally Posted by james-30 View Post
357whp is more then enough power to get yourself thrown into jail. lol
Well, that's certainly one way to look at it lmao. But now I NEED more power, I was on the highway last night and got gapped by a EJ civic. I'm gonna blame it on the fact that I was running 93 and not E85 at the time so I don't have to cry myself to sleep.
frugalrhombus is offline   Reply With Quote
Old 02-27-2019, 06:57 PM   #58
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

Couple more pictures.


james-30 is offline   Reply With Quote
Old 03-05-2019, 04:34 PM   #59
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

Well car made a modest 431 whp on flex very easily. Im going to keep it here for now and see how things go.


james-30 is offline   Reply With Quote
Old 03-05-2019, 06:12 PM   #60
xX_STI_Xx
Scooby Newbie
 
Member#: 493470
Join Date: Nov 2018
Vehicle:
2019 STI
Crystal White Pearl

Default

Quote:
Originally Posted by james-30 View Post
Well car made a modest 431 whp on flex very easily. Im going to keep it here for now and see how things go.
431whp on stock block???

Great numbers James! Have you had a chance to drive it on the road? If so, can you post some POV videos?
xX_STI_Xx is offline   Reply With Quote
Old 03-06-2019, 09:40 PM   #61
simpleJ
Scooby Specialist
 
Member#: 391748
Join Date: May 2014
Chapter/Region: NESIC
Location: The Shire
Vehicle:
2015 WRX CWP (sold)
2019 STi CWP

Default

Quote:
Originally Posted by greygonzalez View Post
Would recommend going fmic. Intake temps are always -14 below ambient
Quote:
Originally Posted by GlarryHoodDIT View Post
Lol wat. Not on this planet.
Quote:
Originally Posted by greygonzalez View Post

Intake temp 63. Ambient 76, okay -13
Quote:
Originally Posted by greygonzalez View Post
These are the same sensors used to measure before and after ����*♂️

As far as I am concerned this is accurate. If someone can help educate me then I am open to that.
Quote:
Originally Posted by rtv900 View Post
Dude, for one, isn't that 'intake temp' on your AP the Air Box temp right at your filter anyway?
Not the actual intake manifold temp post intercooler?

Or do the 19's have different placed sensors than my 16?

and yeah, it cools it below ambient? nice!

The sensors are the same. Lmao. Sensor is upstream of the turbo and IC still.

It doesn’t cool below ambient lmao.
Enthalpy, how does it work?
simpleJ is offline   Reply With Quote
Old 03-06-2019, 10:29 PM   #62
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

Quote:
Originally Posted by xX_STI_Xx View Post
431whp on stock block???

Great numbers James! Have you had a chance to drive it on the road? If so, can you post some POV videos?
Ive drive it a little, yes. It pulls ridiculously hard. I gotta get the exhaust figured out as it's "ear bleeding" loud right now. Im gonna have TIC plumb the EWG dump tube into the down pipe and replace my P&L track series catback with a Corsa exhaust.
james-30 is offline   Reply With Quote
Old 03-06-2019, 10:34 PM   #63
simpleJ
Scooby Specialist
 
Member#: 391748
Join Date: May 2014
Chapter/Region: NESIC
Location: The Shire
Vehicle:
2015 WRX CWP (sold)
2019 STi CWP

Default

Quote:
Originally Posted by james-30 View Post
Ive drive it a little, yes. It pulls ridiculously hard. I gotta get the exhaust figured out as it's "ear bleeding" loud right now. Im gonna have TIC plumb the EWG dump tube into the down pipe and replace my P&L track series catback with a Corsa exhaust.
You can also try supertrapps on the dump

CORSA may not help much in terms of volume...
simpleJ is offline   Reply With Quote
Old 05-07-2019, 09:57 PM   #64
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

I had the car ceramic coated and clear bra on front bumper and hood. I also finally had my Forged whee mounted,l installed. 18x9.5 +45 but running a 3mm spacer so I can clear coilovers. Gen 7 Fortune auto 500 with 9K springs on the way.


james-30 is offline   Reply With Quote
Old 05-13-2019, 03:13 PM   #65
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

And let the suspension upgrades commence.



james-30 is offline   Reply With Quote
Old 05-15-2019, 05:10 PM   #66
xX_STI_Xx
Scooby Newbie
 
Member#: 493470
Join Date: Nov 2018
Vehicle:
2019 STI
Crystal White Pearl

Default

Love this build....nice work James!

This seriously is my motivation for my upcoming upgrades.

Thanks alot for sharing!
xX_STI_Xx is offline   Reply With Quote
Old 05-17-2019, 09:09 PM   #67
MidlifeCrisisCar
Scooby Newbie
 
Member#: 498880
Join Date: Mar 2019
Default Cobb value

Quote:
Originally Posted by james-30 View Post
So I'm thinking abt swaping my Cobb intake out for the 18-19 AEM intake. Looking like the map sensor is now inside the box on the aem and filter looks much larger. Anyone have any feed back on this?
I just installed Cobb intake with airbox and accessport in my 2018 sti
I already had Cobb cat back on it and it is hard to tell if it made a big difference off the butt dyno I collected on a short drive that featured some serious on ramp speeding. Stock set up had a noticeable turbo slap at about 4k that is gone now and it just hit 18.5psi peak boost in s# beating the previous best by almost 2psi. Not sure if it is worth the money yet.
MidlifeCrisisCar is offline   Reply With Quote
Old 05-19-2019, 08:30 PM   #68
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

Quote:
Originally Posted by MidlifeCrisisCar View Post
I just installed Cobb intake with airbox and accessport in my 2018 sti
I already had Cobb cat back on it and it is hard to tell if it made a big difference off the butt dyno I collected on a short drive that featured some serious on ramp speeding. Stock set up had a noticeable turbo slap at about 4k that is gone now and it just hit 18.5psi peak boost in s# beating the previous best by almost 2psi. Not sure if it is worth the money yet.
Go have it E-tuned or pro tuned and it'll be a whole new animal.
james-30 is offline   Reply With Quote
Old 06-01-2019, 12:37 PM   #69
mjsmith2
Scooby Newbie
 
Member#: 462814
Join Date: Feb 2017
Default

How are the post IC temps with the top mount? My Dom 3.5 heat soaks an ETS top mount after a 2-3 pull.
mjsmith2 is offline   Reply With Quote
Old 06-23-2019, 04:06 PM   #70
Richb42
Scooby Newbie
 
Member#: 503524
Join Date: Jun 2019
Default Exhaust question

So Iím new to the STI world along with cars in general. I currently have the 2019 sti grey series. I installed the AWE track edition cat back exhaust. Could someone help me figure out what downpipe would fit/work?
Richb42 is offline   Reply With Quote
Old 06-24-2019, 03:19 AM   #71
Seattlewrxfan
Scooby Newbie
 
Member#: 433498
Join Date: Nov 2015
Default

Quote:
Originally Posted by Richb42 View Post
So Iím new to the STI world along with cars in general. I currently have the 2019 sti grey series. I installed the AWE track edition cat back exhaust. Could someone help me figure out what downpipe would fit/work?
I have a gray series with a AWE touring and a Cobb downpipe. No reason you shouldn't be able to run a Cobb or other downpipe.
Seattlewrxfan is offline   Reply With Quote
Old 06-24-2019, 06:40 PM   #72
nkmcc
Scooby Newbie
 
Member#: 92271
Join Date: Jul 2005
Chapter/Region: MWSOC
Location: Machesney Park, IL
Vehicle:
2019 STI
WRB

Default

Quote:
Originally Posted by Richb42 View Post
So Iím new to the STI world along with cars in general. I currently have the 2019 sti grey series. I installed the AWE track edition cat back exhaust. Could someone help me figure out what downpipe would fit/work?
Look for a 08-14WRX/08+STi downpipe.
nkmcc is offline   Reply With Quote
Old 07-04-2019, 02:26 PM   #73
james-30
Scooby Newbie
 
Member#: 430450
Join Date: Sep 2015
Location: Indianapolis
Vehicle:
2019 STI
Lapis Blue

Default

Selling the Speedwell RS-R forged monoblock wheels. Pictured on the car above. Just bought Wedsport RN-05M. Excited to get them mounted.



james-30 is offline   Reply With Quote
Old 07-21-2019, 03:17 AM   #74
pandamaster
Scooby Newbie
 
Member#: 169887
Join Date: Jan 2008
Location: MIAMI, FLORIDA
Vehicle:
2005 wrx
silver

Default

Awesome build! Whats the differences you noticed with the bushing upgrades? Also hows the car running with the power your at any issues?
pandamaster is offline   Reply With Quote
Old 07-22-2019, 08:44 PM   #75
08redWRX
Scooby Newbie
 
Member#: 186068
Join Date: Aug 2008
Chapter/Region: South East
Location: NC
Vehicle:
2019 STi
DGM

Default

I would love reliable 400whp on e85! Hopefully she stays together. Mine isn't a daily either but spend money on my bike and truck as well so hard to conjure up money to put into the STi right now. Only have 1800 miles anyway so was going to wait till about 5k miles prior to accessport just to make sure nothing is wrong with her.
08redWRX 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 03:15 PM.


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

As an Amazon Associate I earn from qualifying purchases.