Welcome to the North American Subaru Impreza Owners Club Thursday July 10, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
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.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 04-19-2014, 09:05 AM   #1
Visconti
NASIOC Vendor
 
Member#: 156247
Join Date: Aug 2007
Chapter/Region: NESIC
Location: Norwalk, CT
Vehicle:
14' Flex Fuel FXT
15' Flex Fuel WRX

Default Visconti Tuning - 2015 WRX vs 2015 STI

Finally got a chance to put a 2015 WRX on the dyno and compare it with it's big brother, the STi










Broke the wideband yesterday but similar to the other Subaru's, the WRX stays in closed loop for a while...Air Fuel is 11.8 after.

Best part about the SubaruDIT is it has a factory wideband in it!!

John
* Registered users of the site do not see these ads.
Visconti is online now   Reply With Quote
Old 04-19-2014, 09:44 AM   #2
Daggernomad55555
Scooby Newbie
 
Member#: 343485
Join Date: Jan 2013
Location: Québec
Vehicle:
2011 STI

Default

Quote:
Originally Posted by Visconti View Post
Best part about the SubaruDIT is it has a factory wideband in it!!
What do you mean exactly? What is "SubaruDIT"?

Nice to see those baselines.
Daggernomad55555 is offline   Reply With Quote
Old 04-19-2014, 10:02 AM   #3
Visconti
NASIOC Vendor
 
Member#: 156247
Join Date: Aug 2007
Chapter/Region: NESIC
Location: Norwalk, CT
Vehicle:
14' Flex Fuel FXT
15' Flex Fuel WRX

Default

Quote:
Originally Posted by Daggernomad55555 View Post
What do you mean exactly? What is "SubaruDIT"? Nice to see those baselines.
Subaru Direct-injection Turbo , what's in the new wrx and FXT

John
Visconti is online now   Reply With Quote
Old 04-19-2014, 10:04 AM   #4
nate_fisher
Scooby Specialist
 
Member#: 270482
Join Date: Jan 2011
Location: albany ny
Vehicle:
2011 forester xt
corn fed td06 20g 8cm

Default

Subaru direct injection turbo its the new motor used in the 2015 wrx and 2014+ forester xt that shares the same style direct fuel injection as the brz/frs.
nate_fisher is offline   Reply With Quote
Old 04-19-2014, 10:06 AM   #5
Paul
Scooby Guru
 
Member#: 56203
Join Date: Feb 2004
Chapter/Region: Tri-State
Location: south nj
Vehicle:
00 RSTI Coupe
Twin Scroll 2.5XTR EJ207

Default

when will ECUTek have software for the WRX?
Paul is offline   Reply With Quote
Old 04-19-2014, 10:07 AM   #6
Visconti
NASIOC Vendor
 
Member#: 156247
Join Date: Aug 2007
Chapter/Region: NESIC
Location: Norwalk, CT
Vehicle:
14' Flex Fuel FXT
15' Flex Fuel WRX

Default

Quote:
Originally Posted by Paul View Post
when will ECUTek have software for the WRX?
I'm not allowed to comment on that.

But keep a eye on this thread and my FXT thread I'm making later today

John
Visconti is online now   Reply With Quote
Old 04-19-2014, 03:16 PM   #7
gargleblaster
Scooby Specialist
 
Member#: 11107
Join Date: Oct 2001
Chapter/Region: RMIC
Location: Rky Mtn High
Vehicle:
2015 WRX STi
Crystal White Pearl

Default

Thanks for doing these pulls and posting the results. I have two questions:

1) Were these runs back-to-back with both cars up to operating temps, etc?
2) What was the mileage on each car, and were they both broken in using the same methods?

Thanks
gargleblaster is offline   Reply With Quote
Old 04-19-2014, 03:20 PM   #8
Ultimateone
Scooby Specialist
 
Member#: 48025
Join Date: Nov 2003
Chapter/Region: NESIC
Location: By the Ocean, MA
Vehicle:
2015 WRX
Ice Silver Mettalic

Default

INteresting
Ultimateone is offline   Reply With Quote
Old 04-19-2014, 03:42 PM   #9
st205wrx
Scooby Newbie
 
Member#: 193253
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Niles
Vehicle:
08 wrx 322/352
wrb

Default

Quote:
Originally Posted by nate_fisher View Post
Subaru direct injection turbo its the new motor used in the 2015 wrx and 2014+ forester xt that shares the same style direct fuel injection as the brz/frs.
It is not the same exact as the brz, subaru used toyotas engineered di system with their port system. This di system and the one found in the fxt is all theirs.
st205wrx is offline   Reply With Quote
Old 04-19-2014, 04:08 PM   #10
Visconti
NASIOC Vendor
 
Member#: 156247
Join Date: Aug 2007
Chapter/Region: NESIC
Location: Norwalk, CT
Vehicle:
14' Flex Fuel FXT
15' Flex Fuel WRX

Default

Quote:
Originally Posted by gargleblaster View Post
Thanks for doing these pulls and posting the results. I have two questions:

1) Were these runs back-to-back with both cars up to operating temps, etc?
2) What was the mileage on each car, and were they both broken in using the same methods?

Thanks
1 - The runs weren't on the same day, both up to operating temp
2 - STi had 500 miles on it, WRX had 126 miles on it

The results are similar to what car and driver or road and track found

John
Visconti is online now   Reply With Quote
Old 04-19-2014, 04:33 PM   #11
SGOSWRX
Scooby Specialist
 
Member#: 10921
Join Date: Oct 2001
Location: S.W. Florida
Vehicle:
04 04 STi
12.8 @ 105 mph

Default

Quote:
Originally Posted by gargleblaster View Post
Thanks for doing these pulls and posting the results. I have two questions:

1) Were these runs back-to-back with both cars up to operating temps, etc?
2) What was the mileage on each car, and were they both broken in using the same methods?

Thanks
Numbers corrected or uncorrected?
Temp, humidity, pressure could come into play if the numbers are uncorrected STD vs. SAE.
STD hp numbers would increase with better air.

But it's nice to see the STi actually makes more HP than the WRX. Lots of rumors and reports of WRXs making similar numbers to the STi on the dyno.
SGOSWRX is offline   Reply With Quote
Old 04-19-2014, 05:07 PM   #12
Visconti
NASIOC Vendor
 
Member#: 156247
Join Date: Aug 2007
Chapter/Region: NESIC
Location: Norwalk, CT
Vehicle:
14' Flex Fuel FXT
15' Flex Fuel WRX

Default

Quote:
Originally Posted by SGOSWRX View Post
Numbers corrected or uncorrected?
Temp, humidity, pressure could come into play if the numbers are uncorrected STD vs. SAE.
STD hp numbers would increase with better air.

But it's nice to see the STi actually makes more HP than the WRX. Lots of rumors and reports of WRXs making similar numbers to the STi on the dyno.
Everything was apples to apples on both dyno runs.

WRX Spools up faster, and the STI makes more power, not much.

Big difference no one has discussed is the WRX is 100% happy, zero knock.. where I've seen several STis knock during their baselines.

SubaruDIT ftw
Visconti is online now   Reply With Quote
Old 04-19-2014, 07:46 PM   #13
VladiWrX
Scooby Specialist
 
Member#: 145658
Join Date: Apr 2007
Location: NorCal
Vehicle:
On my 5th scoob
and lovin it

Default

Interesting you mention that, when others reported getting significant heat soak and going limp due to knock when doing 4th gear pull on the wrx, resulting in those crazy looking epileptic plots posted in the other threads.
VladiWrX is offline   Reply With Quote
Old 04-19-2014, 07:50 PM   #14
Visconti
NASIOC Vendor
 
Member#: 156247
Join Date: Aug 2007
Chapter/Region: NESIC
Location: Norwalk, CT
Vehicle:
14' Flex Fuel FXT
15' Flex Fuel WRX

Default

Quote:
Originally Posted by VladiWrX View Post
Interesting you mention that, when others reported getting significant heat soak and going limp due to knock when doing 4th gear pull on the wrx, resulting in those crazy looking epileptic plots posted in the other threads.
I have good airflow on this dyno.. the STi knocks because it's over advanced, the SubaruDIT however isn't, even when the IAM is at 1.0.. At least that's what i've seen.

John
Visconti is online now   Reply With Quote
Old 04-19-2014, 08:11 PM   #15
Celery GT-5
Scooby Guru
 
Member#: 98210
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: Upstate NY
Vehicle:
2015 WRX Premium 6MT
WRB

Default

interesting
Celery GT-5 is offline   Reply With Quote
Old 04-19-2014, 08:14 PM   #16
redline41190
Scooby Specialist
 
Member#: 241743
Join Date: Mar 2010
Chapter/Region: South East
Location: So.Fla
Vehicle:
2011 Impreza WRX
World Rally Blue

Default

So once again the WRX has a much lower drive train loss than the STi. Neat.
redline41190 is offline   Reply With Quote
Old 04-19-2014, 08:22 PM   #17
thuanvinhny
Scooby Newbie
 
Member#: 288935
Join Date: Jul 2011
Location: Ohio
Default

Quote:
Originally Posted by redline41190 View Post
So once again the WRX has a much lower drive train loss than the STi. Neat.
That is common senses, less moving parts, less energy wasted...more efficient. It just wont have the grip, tractions, the handlings like the STI, especially in rally
thuanvinhny is offline   Reply With Quote
Old 04-19-2014, 08:24 PM   #18
thuanvinhny
Scooby Newbie
 
Member#: 288935
Join Date: Jul 2011
Location: Ohio
Default

Quote:
Originally Posted by Visconti View Post
Everything was apples to apples on both dyno runs.

WRX Spools up faster, and the STI makes more power, not much.

Big difference no one has discussed is the WRX is 100% happy, zero knock.. where I've seen several STis knock during their baselines.

SubaruDIT ftw
Are you saying 15 STI with the new tune? Or the old 14 with it old tune ?
thuanvinhny is offline   Reply With Quote
Old 04-19-2014, 09:51 PM   #19
Visconti
NASIOC Vendor
 
Member#: 156247
Join Date: Aug 2007
Chapter/Region: NESIC
Location: Norwalk, CT
Vehicle:
14' Flex Fuel FXT
15' Flex Fuel WRX

Default

Quote:
Originally Posted by thuanvinhny View Post
Are you saying 15 STI with the new tune? Or the old 14 with it old tune ?
The GR STis
Visconti is online now   Reply With Quote
Old 04-25-2014, 04:01 PM   #20
cannon98
Scooby Newbie
 
Member#: 187775
Join Date: Aug 2008
Chapter/Region: TXIC
Vehicle:
15 Wrx
Crystal White Pearl

Default

any updates for the 15 wrx ?
cannon98 is offline   Reply With Quote
Old 04-29-2014, 07:18 AM   #21
shamrock 05
Scooby Specialist
 
Member#: 120057
Join Date: Jul 2006
Chapter/Region: MWSOC
Location: *outskirts of motor city*
Vehicle:
2004 "Bugeye" WRX
WRB

Default

Quote:
Originally Posted by Visconti View Post
Everything was apples to apples on both dyno runs.

WRX Spools up faster, and the STI makes more power, not much.

Big difference no one has discussed is the WRX is 100% happy, zero knock.. where I've seen several STis knock during their baselines.

SubaruDIT ftw
You say this, but then looking at other people doing dyno runs, the WRX tune looks choppy.

http://forums.nasioc.com/forums/show...highlight=2015
shamrock 05 is offline   Reply With Quote
Old 05-20-2014, 08:04 PM   #22
IWD
Scooby Newbie
 
Member#: 335804
Join Date: Oct 2012
Default

Quote:
Originally Posted by Visconti View Post
1 - The runs weren't on the same day, both up to operating temp
2 - STi had 500 miles on it, WRX had 126 miles on it

The results are similar to what car and driver or road and track found

John
Not quite. Road and track found the STi making 247whp peak vs the WRX's 223whp peak.

R&T's performance numbers are congruent with the 2014 STi making their dyno numbers slightly inflated.

Their peaks are also 24whp apart, whereas your peaks are about 10whp apart.

Also, if your dyno numbers are correct, then the STi should be performing right under the common performance of the everyday stage 2, which they don't.

And with regards the the 2015 WRX's whp; your dyno shows them making last years WRX/STi numbers if not a little more, yet they are nearly a full second slower to 60.

And here is the proverbial nail in your coffin. This car made 303whp with a downpipe and EL headers. Yet your makes 15whp more with less.

http://forums.nasioc.com/forums/show....php?t=2616821

http://www.roadandtrack.com/car-revi...aru-wrx-vs-sti


Dyno's are tools that is it. The proof is in the pudding. And the empirical evidence that supports the new STi having the same HP as its predecessor is in their extremely similar acceleration and quarter mile times. Even quarter mile times can be skewed, like that uncle phil guy who got in 09 wrx into the 12's (supposedly 100% stock).

http://forums.nasioc.com/forums/show....php?t=1888473


I don't like high reading dyno's. It makes too many bench racers turn into actual racers thinking their car has another 50bhp more than it really does.

and FYI, the road and track dyno comparison back to back is congruent with Subaru's claim of 268hp vs 305. Your dyno run isn't.
IWD is offline   Reply With Quote
Old 05-20-2014, 08:11 PM   #23
Visconti
NASIOC Vendor
 
Member#: 156247
Join Date: Aug 2007
Chapter/Region: NESIC
Location: Norwalk, CT
Vehicle:
14' Flex Fuel FXT
15' Flex Fuel WRX

Default

Yes your right a dyno is only a tool.

The 2015 dynosheet I posted shows that it performs just like every other 08+ STi that's we've seen before.

Anything can be skewed, but that's not what I'm doing here.. Ive posted very clear results / gains.

Also have track times that back it up.

John
Visconti is online now   Reply With Quote
Old 05-20-2014, 08:34 PM   #24
Danible
Scooby Newbie
 
Member#: 386920
Join Date: Apr 2014
Default

Quote:
Originally Posted by IWD View Post

And with regards the the 2015 WRX's whp; your dyno shows them making last years WRX/STi numbers if not a little more, yet they are nearly a full second slower to 60.
Not really. It is 5 speed vs. 6 speed. The shift points. If you stay in 2nd you can achieve last years numbers. If you shift, you will not. A little misleading.
Danible is online now   Reply With Quote
Old 05-20-2014, 11:48 PM   #25
9900rpm
Scooby Newbie
 
Member#: 103733
Join Date: Dec 2005
Location: Dirty Jersey + NYC
Vehicle:
2015 STI
ISM

Default

A few things:

2015 WRX making similar power to 2014 STI doesn't mean that they will run the same times. A second slower can be due to gearing, and difficulty of the actual shift. You can't bang gears on a cable actuated shifter the way you bang gears on a rod/linkage shifter. A car with less or the same power, but with better shift action and better ratios will be quicker.

Comparison between The Shop's 303whp '15 STi w/EL headers vs this 319whp one without. The Shop's car also baselined at 204whp on their dyno, where as this one baselined at 268whp on the dyno Visconti used. The Shop's car picked up more power with the EL header than Visconti tuned car without EL header, no?
9900rpm 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 10:54 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.