Welcome to the North American Subaru Impreza Owners Club Thursday June 30, 2022
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC General > Proven Power Bragging

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 11-23-2020, 05:16 PM   #1
snow_bound26
Scooby Specialist
 
Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: SLC and Lake Placid
Vehicle:
2005 92x Aero
Beige

Default EJ207 w/Blouch 20g XTR




2005 Saab 9-2x Aero
Facility: EFI Logics
Tuned By: Calvin Dotson
Type of Dyno: Mustang

Boost: 20.7
Fuel: 91
Mileage: Chassis-67,000/engine 70,000ish
Block: Stock EJ207 v7

Peak WHP: 329
Peak WTQ: 266

Mods:
-KS Tech 73mm Big MAF
-Perrin Turbo Inlet
-Process West TMIC
-OEM exhaust manifold w/ceramic coating
-GrimmSpeed up pipe w/Perrin blanket
-Blouch 20g XTR 8cm turbine housing IWG w/blanket
-Stromung shorty down pipe ceramic coated w/blanket
-Turbo XS street version catback and high flow cat
-Walbro 255 fuel pump
-ID 1050x injectors
-Perrin fuel rails
-Cobb EBCS
-Ixiz phenolic spacers
-2005 STi transmission w/Suretrack R180 rear diff
-Exedy stage 1 HD clutch
-PST carbon DS
-DCCDpro manual center diff controller
-functional AVCS w/JDM ECU

I'm probably forgetting something. But figured I'd post this here since there's not much info about the 20g XTR on the 207. Pretty happy with the results.
* Registered users of the site do not see these ads.

Last edited by snow_bound26; 11-23-2020 at 06:31 PM.
snow_bound26 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 11-23-2020, 06:28 PM   #2
tabrad
Scooby Specialist
 
Member#: 157229
Join Date: Aug 2007
Chapter/Region: RMIC
Location: SLC, Utah
Vehicle:
2006 STi
Wrapped Blue

Default

Awesome looking chart. Spool sure hits hard!
tabrad is offline   Reply With Quote
Old 11-23-2020, 06:36 PM   #3
GK1707
Scooby Specialist
 
Member#: 373868
Join Date: Nov 2013
Chapter/Region: Tri-State
Location: Queens, NY
Vehicle:
'04 STi
WRB

Default

Nice setup man, spool looks identical to mine also tuned by Calvin as well.
GK1707 is offline   Reply With Quote
Old 11-23-2020, 06:53 PM   #4
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

Very nice.

How does it feel to rev out to 8250**?

Last edited by K3rm1tth3fr0g; 11-23-2020 at 10:06 PM.
K3rm1tth3fr0g is online now   Reply With Quote
Old 11-23-2020, 07:10 PM   #5
snow_bound26
Scooby Specialist
 
Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: SLC and Lake Placid
Vehicle:
2005 92x Aero
Beige

Default

Quote:
Originally Posted by GK1707 View Post
Nice setup man, spool looks identical to mine also tuned by Calvin as well.


I saw your post as well. Looks like our cars were just a few days apart. Definitely a fun turbo. Wouldn't mind getting a little more torque like you have. But the 207 is a damn fun engine.
snow_bound26 is offline   Reply With Quote
Old 11-23-2020, 07:14 PM   #6
snow_bound26
Scooby Specialist
 
Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: SLC and Lake Placid
Vehicle:
2005 92x Aero
Beige

Default

Quote:
Originally Posted by K3rm1tth3fr0g View Post
Very nice.

How does it feel to rev out to 8500?


Redline is 8000 and limiter is 8250 on these. Tbh, it pulls hard all the way up. Everyone seemed pretty surprised by how well it held boost. I had asked for it to be more linear than peaky. There's a bit more on the table but I like having room rather than pushing to the edge.
snow_bound26 is offline   Reply With Quote
Old 09-09-2021, 08:16 PM   #7
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'm about to get my EJ205 tuned on E85 with a Link ECU and a 20GXT-R.

Had to pull up your thread to take a look. Very nice to see spool on the dyno by 3800 on a 2L with a 20G on pump gas.

I am hoping the E85, Link ECU and blankets and coatings help it spool before 4.5K... Its a 10CM version... and my USDM 205 has no AVCS.

This car seems very fast.
K3rm1tth3fr0g is online now   Reply With Quote
Old 09-10-2021, 05:58 AM   #8
snow_bound26
Scooby Specialist
 
Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: SLC and Lake Placid
Vehicle:
2005 92x Aero
Beige

Default EJ207 w/Blouch 20g XTR

Quote:
Originally Posted by K3rm1tth3fr0g View Post
I'm about to get my EJ205 tuned on E85 with a Link ECU and a 20GXT-R.

Had to pull up your thread to take a look. Very nice to see spool on the dyno by 3800 on a 2L with a 20G on pump gas.

I am hoping the E85, Link ECU and blankets and coatings help it spool before 4.5K... Its a 10CM version... and my USDM 205 has no AVCS.

This car seems very fast.

This is a 91oct tune as well. Because the rods and bearings are the weak point (especially the rods) on the 205, I'd recommend asking your tuner for a more linear torque curve to take some stress off your rods. It will help save the bearings and hopefully your engine will last longer. Trying to create too much torque too quickly equals short life span.

Everyone makes a big deal about the 10cm being slower to spool. They didn't have a 10cm in stock when I ordered mine so went with the 8 as a result. It did hold better up top than expected. But that's probably more because of the 207 cam profile.

Your 205 cam profile helps with more low/mid range response. My guess with everything coated, wrapped and 85 you'll spool quicker than you think. Yes AVCS makes a difference, but cam profile dictates a lot of that as well. That's why the 207 has a hard time spooling most turbos below 4000. I won't comment how it will react on the dyno since they are all so different, but on the street I'll bet your power band will be 4000-redline. I know every tuner is a little different, but I wouldn't move the redline past the 7000 OEM limit. The 205 springs just can't keep up especially if you start trying to push past 22psi. I've been told that the cam profile with better springs is good to 7500 though.

When I eventually go +2mm rod hybrid I'm going to try v9 intake cam with a slightly longer duration exhaust cam to help scavenge more efficiently.

Good luck on dyno day and enjoy the drive home
snow_bound26 is offline   Reply With Quote
Old 09-10-2021, 12:14 PM   #9
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 snow_bound26 View Post
This is a 91oct tune as well. Because the rods and bearings are the weak point (especially the rods) on the 205, I'd recommend asking your tuner for a more linear torque curve to take some stress off your rods. It will help save the bearings and hopefully your engine will last longer. Trying to create too much torque too quickly equals short life span.

Everyone makes a big deal about the 10cm being slower to spool. They didn't have a 10cm in stock when I ordered mine so went with the 8 as a result. It did hold better up top than expected. But that's probably more because of the 207 cam profile.

Your 205 cam profile helps with more low/mid range response. My guess with everything coated, wrapped and 85 you'll spool quicker than you think. Yes AVCS makes a difference, but cam profile dictates a lot of that as well. That's why the 207 has a hard time spooling most turbos below 4000. I won't comment how it will react on the dyno since they are all so different, but on the street I'll bet your power band will be 4000-redline. I know every tuner is a little different, but I wouldn't move the redline past the 7000 OEM limit. The 205 springs just can't keep up especially if you start trying to push past 22psi. I've been told that the cam profile with better springs is good to 7500 though.

When I eventually go +2mm rod hybrid I'm going to try v9 intake cam with a slightly longer duration exhaust cam to help scavenge more efficiently.

Good luck on dyno day and enjoy the drive home
Thank you!

The drive home will be a little cautious since I'll have the old 5MT swap and lots of parts in the trunk

I was planning to move the red-line no further than ~7400 - Stock fuel cut is 7200. I am just worried the power-band will be very narrow with the large exhaust housing and no AVCS. And I have heard of people extending red-line out to 7500 on the 205 without issues but I understand the cams/ports aren't efficient past ~6.5K.

My thought process is ~300 RPM more of usable torque may be justifiable if spool is super late, even if it's not necessarily making more power. Especially on pump gas. I am not expecting power on pump gas before 4500, so I am thinking bumping the red-line a tad may be worth it. Especially because I won't be banging off the limiter often anyway, and the motor is going to get built soon anyway (well not this motor, but A motor).

This thread is similar to my setup in a few ways, like the EJ205 (although mine isn't built), the turbo (the 1.5XTR and 20G-XTR are the same turbo aside from the compressor wheel), no AVCS, and it's on pump gas.

Spool was pretty bad.

Last edited by K3rm1tth3fr0g; 09-10-2021 at 01:08 PM.
K3rm1tth3fr0g is online now   Reply With Quote
Old 09-10-2021, 09:58 PM   #10
snow_bound26
Scooby Specialist
 
Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: SLC and Lake Placid
Vehicle:
2005 92x Aero
Beige

Default

Quote:
Originally Posted by K3rm1tth3fr0g View Post
Thank you!

The drive home will be a little cautious since I'll have the old 5MT swap and lots of parts in the trunk

I was planning to move the red-line no further than ~7400 - Stock fuel cut is 7200. I am just worried the power-band will be very narrow with the large exhaust housing and no AVCS. And I have heard of people extending red-line out to 7500 on the 205 without issues but I understand the cams/ports aren't efficient past ~6.5K.

My thought process is ~300 RPM more of usable torque may be justifiable if spool is super late, even if it's not necessarily making more power. Especially on pump gas. I am not expecting power on pump gas before 4500, so I am thinking bumping the red-line a tad may be worth it. Especially because I won't be banging off the limiter often anyway, and the motor is going to get built soon anyway (well not this motor, but A motor).

This thread is similar to my setup in a few ways, like the EJ205 (although mine isn't built), the turbo (the 1.5XTR and 20G-XTR are the same turbo aside from the compressor wheel), no AVCS, and it's on pump gas.

Spool was pretty bad.


That cam profile is the main reason that it spools so slow. Those aspects need to be acknowledged when looking at builds that seem similar to yours.

Valve float is the issue with the 205. The cams can handle 7500, it's the springs that have an issue going past 7000 with 22psi+. On pump gas you'd probably end up 20-21psi, but on E85 you might end up around 24psi.
snow_bound26 is offline   Reply With Quote
Old 09-10-2021, 11:04 PM   #11
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 snow_bound26 View Post
That cam profile is the main reason that it spools so slow. Those aspects need to be acknowledged when looking at builds that seem similar to yours.

Valve float is the issue with the 205. The cams can handle 7500, it's the springs that have an issue going past 7000 with 22psi+. On pump gas you'd probably end up 20-21psi, but on E85 you might end up around 24psi.
Good call.

Thank you for your valuable input, my friend.

Last edited by K3rm1tth3fr0g; 09-11-2021 at 01:24 PM.
K3rm1tth3fr0g is online now   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 03:46 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.