Welcome to the North American Subaru Impreza Owners Club Thursday March 27, 2025
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > FA Series Factory 2.4L Turbo Powertrain

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 03-18-2023, 10:05 PM   #1
Dave D.
Scooby Specialist
 
Member#: 130990
Join Date: Nov 2006
Chapter/Region: NWIC
Location: Menzel Lake, WA
Vehicle:
06 Red Ltd.Wagon
Dom 1.5xtr JJ tuned

Default Future build

Thinking about a Forester XT for my wife. Anybody tuned one yet?
* Registered users of the site do not see these ads.
Dave D. is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 03-20-2023, 12:13 PM   #2
Snow Drift
Scooby Specialist
 
Member#: 75071
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: Long Island
Vehicle:
23 Solterra,ModelY
Old: 05 08 11 WRX, 18 STI

Default

Quote:
Originally Posted by Dave D. View Post
Thinking about a Forester XT for my wife. Anybody tuned one yet?
Wrong forum.
Snow Drift is offline   Reply With Quote
Old 03-20-2023, 02:02 PM   #3
Dave D.
Scooby Specialist
 
Member#: 130990
Join Date: Nov 2006
Chapter/Region: NWIC
Location: Menzel Lake, WA
Vehicle:
06 Red Ltd.Wagon
Dom 1.5xtr JJ tuned

Default

Quote:
Originally Posted by Snow Drift View Post
Wrong forum.
Oh, you're right -- looks like I'm going to have to look at Outback XTs to get that motor!
Dave D. is offline   Reply With Quote
Old 03-20-2023, 06:05 PM   #4
Russ_G93
Scooby Newbie
 
Member#: 528403
Join Date: Jan 2022
Chapter/Region: NWIC
Location: NorCal
Vehicle:
22' WR-HikingShoe
24' F350 Tremor, 18' Q5

Default

Quote:
Originally Posted by Dave D. View Post
Oh, you're right -- looks like I'm going to have to look at Outback XTs to get that motor!
Its funny because youll probably find more forums (Like on reddit) about guys tuning the CVT in the 2020 XT's and above, but when it comes to a WRX, dudes be like "Nope" lol. People have opted for the JB4 as far as what I have seen on the Outback XTs. IF you do, go for something like that, I would advise a "Light" tune; at least before someone blows their 2.4 up and we can clearly see the tolerances of the trans. Outback XT has a higher torque rating due to its 6 Spd Auto config. WRX supposedly runs an 8spd config in the SPT. Only the WRX has the SPT trans.
Russ_G93 is offline   Reply With Quote
Old 03-21-2023, 10:05 AM   #5
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

I did all the bolt ons and tune on my 2023 Outback XT

https://www.subaruoutback.org/threads/bms-jb4-piggyback-tune-for-the-2-4t-outback-s.547182/page-33#post-6350651

Sleeper dad wagon 10,000 miles on the CVT so far with the tune
user1029 is offline   Reply With Quote
Old 03-21-2023, 10:22 AM   #6
K3rm1tth3fr0g
Scooby Specialist
 
Member#: 508105
Join Date: Nov 2019
Chapter/Region: NWIC
Location: Greater Seattle Area
Vehicle:
Link G4X flex tuned
02' EJ205 20G 6MT wagon

Default

Quote:
Originally Posted by user1029 View Post
I did all the bolt ons and tune on my 2023 Outback XT

https://www.subaruoutback.org/thread...3#post-6350651

Sleeper dad wagon 10,000 miles on the CVT so far with the tune
Wicked
K3rm1tth3fr0g is offline   Reply With Quote
Old 03-21-2023, 11:57 AM   #7
Russ_G93
Scooby Newbie
 
Member#: 528403
Join Date: Jan 2022
Chapter/Region: NWIC
Location: NorCal
Vehicle:
22' WR-HikingShoe
24' F350 Tremor, 18' Q5

Default

Quote:
Originally Posted by user1029 View Post
I did all the bolt ons and tune on my 2023 Outback XT

https://www.subaruoutback.org/thread...3#post-6350651

Sleeper dad wagon 10,000 miles on the CVT so far with the tune
Can you make a second thread with all of your experience using the JB4 on the outback? How does it feel? Perform? Any abnormalities within these last two oil changes? Transmission still behave the same since first buying?
Russ_G93 is offline   Reply With Quote
Old 03-21-2023, 02:26 PM   #8
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

Quote:
Originally Posted by Russ_G93 View Post
Can you make a second thread with all of your experience using the JB4 on the outback? How does it feel? Perform? Any abnormalities within these last two oil changes? Transmission still behave the same since first buying?
I logged all of my JB4 journey in the Outback forum thread But in summary, JB4 has done really well and zero transmission problems. Don’t hook up the electric wastegate port for the JB4 because it caused my wastegate arm to seize, resulting in zero boost and P003A code. I was able to unjam it with a screwdriver but there was one person that wasn’t able to unjam it and he needed a whole new turbo

Engine is absolutely solid! Beefier rods and direct injection means detonation/ringland problems in the EJs and bent rods in the FA20DITs are a thing of the past. 2.4L twin scroll turbo is a blast with instant torque augmented further with mods. It’s more than enough driving on public roads

Also Terry and Canon on the burgermotorsport forums are very responsive and helpful

Last edited by user1029; 03-21-2023 at 02:36 PM.
user1029 is offline   Reply With Quote
Old 03-21-2023, 02:47 PM   #9
Dave D.
Scooby Specialist
 
Member#: 130990
Join Date: Nov 2006
Chapter/Region: NWIC
Location: Menzel Lake, WA
Vehicle:
06 Red Ltd.Wagon
Dom 1.5xtr JJ tuned

Default

Quote:
Originally Posted by K3rm1tth3fr0g View Post
Wicked
I want one. Look how the TQ comes on!
Dave D. is offline   Reply With Quote
Old 03-21-2023, 03:25 PM   #10
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

The Outback XT is rated to tow 3500lbs so the transmission (now with OEM cooler) should be able to handle +60wtq
user1029 is offline   Reply With Quote
Old 03-21-2023, 06:02 PM   #11
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

https://www.subaruoutback.org/threads/gen-6-2020-stock-height-suspension-mods-for-better-on-road-handling.525881/

These are great modifications to improve driving feel while maintaining comfort
user1029 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 12:03 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2025 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.