Perth-WRX.com  

Go Back   Perth-WRX.com > Technical > Mechanicals
Register Diddy Kart ArticlesAll AlbumsBlogs FAQ Members List Calendar Search Today's Posts Mark Forums Read


Welcome to Perth-WRX, click here to register!

Like Tree5Likes

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-07-2016, 10:28 AM
Potty Training Scoobie Noobie
Member
 
Join Date: Jan 2014
Location: Noranda
Posts: 44
Thanks: 0
Thanked 0 Times in 0 Posts
Soultrade at standard level
Default Power Comparison

Hi Everyone,
So I've had the 06 WRX for a few years now and only drive it on long drives out to the country (not my daily). Lately I feel that it's not as powerful as it use to be, it just feels like it doesn't pull as hard as it use to. In the past month I've been reading about the ringlands issue for the EJ25. The car has the following mods: TBE, vf34 turbo, bigger fuel pump and a Verso tune. It also has about 101,000km on the clock and I service it regularly. Now from what I've read, opening the throttle up in the highest gear(5th) is one of the causes of this issue. Unknown to me before reading this, that what I've been doing when on those long drives. To try and rule out the ringlands issue I was thinking getting a compression test done or getting it back on the dyno at ASG for a power run and compare the results with the original tune results.

Any advice from you guys is greatly appreciated.
Reply With Quote
  #2  
Old 03-07-2016, 10:32 AM
nick73's Avatar
Subaru Tech Division
Member
 
Join Date: Feb 2011
Location: cubicle 2
Posts: 1,300
Thanks: 139
Thanked 91 Times in 87 Posts
nick73 is a gurunick73 is a guru
Default

Unless there is something wrong with the tune a power run won't reveal much.

My engine still made almost full power just recently on a power run and is only running on three and a half cylinders...
__________________
Bye bye betty blue. Hello F6.
Reply With Quote
  #3  
Old 03-07-2016, 11:05 AM
STI Master
Member
 
Join Date: Oct 2010
Location: Spearwood
Posts: 864
Thanks: 12
Thanked 71 Times in 68 Posts
Bram knows their stuff
Default

A comp test and leak down test could indicate an issue with a particular cylinder. The individual cylinder results them selves dont mean a great deal. And can even read below accepable depending on teat conditions. What is important is uniformity across all cylinders. If one is down on the other 3, you may have issues.
__________________
Doing it for all the wagons out there
Reply With Quote
  #4  
Old 03-07-2016, 01:47 PM
TROLLEY's Avatar
Flat Four Father
Member
 
Join Date: Oct 2008
Location: Perth
Posts: 2,680
Thanks: 166
Thanked 158 Times in 127 Posts
TROLLEY is a guruTROLLEY is a guru
Default

One thing you don't do with the 2.5L is put load on them in a high gear, low revs. You have a shifter for a reason...
__________________
[I]trolololol[/I]
Reply With Quote
  #5  
Old 03-07-2016, 04:11 PM
Potty Training Scoobie Noobie
Member
 
Join Date: Jan 2014
Location: Noranda
Posts: 44
Thanks: 0
Thanked 0 Times in 0 Posts
Soultrade at standard level
Default

^^ I know this now, but didn't before. This is also the first Subaru I've owned and the other cars I've owned don't seem to have this issue.
Reply With Quote
  #6  
Old 03-07-2016, 04:18 PM
WRX Hi Five Club
Member
 
Join Date: Oct 2011
Location: perth
Posts: 194
Thanks: 0
Thanked 3 Times in 3 Posts
Wildbill at standard level
Default

its time to build another motor.....
nick73 likes this.
Reply With Quote
  #7  
Old 03-07-2016, 04:24 PM
STI Master
Member
 
Join Date: Oct 2010
Location: Spearwood
Posts: 864
Thanks: 12
Thanked 71 Times in 68 Posts
Bram knows their stuff
Default

Quote:
Originally Posted by TROLLEY View Post
One thing you don't do with the 2.5L is put load on them in a high gear, low revs. You have a shifter for a reason...
That can be said of any 4cyl engine.
__________________
Doing it for all the wagons out there
Reply With Quote
  #8  
Old 05-07-2016, 07:33 PM
shaunus's Avatar
WRX Hi Five Club
Member
 
Join Date: Aug 2009
Location: Kalgoorlie
Posts: 200
Thanks: 4
Thanked 6 Times in 6 Posts
shaunus at standard level
Default

What makes you think the motor is on it's way out apart from it not feeling as quick? That's a very vague description. Mine was missing a piece of the piston crown and it still pulled like crazy so I wouldn't base your assumption off that alone.

Oil consumption is pretty much the best indicator regarding damaged pistons without digging deeper. Mine was using oil, more than I was comfortable with however, no smoke from oil cap, no loss in power.....just oil.

A compression test needs to be accompanied with a leak down test as recommended above. A compression test alone can be vague. Any competent shop can handle the test.

Good luck and look forward to your results.
Reply With Quote
  #9  
Old 05-07-2016, 07:54 PM
matto20v's Avatar
STI Master
Member
 
Join Date: Jul 2005
Location: Perth
Posts: 948
Thanks: 38
Thanked 36 Times in 33 Posts
matto20v at standard level
Default

Is it possible you're just used to the power?
I read posts where people get bored of 350hp...
Reply With Quote
  #10  
Old 05-07-2016, 09:36 PM
Potty Training Scoobie Noobie
Member
 
Join Date: Jan 2014
Location: Noranda
Posts: 44
Thanks: 0
Thanked 0 Times in 0 Posts
Soultrade at standard level
Default

Ok, so I'll get the compression test and a leak down test done. If it's all good then maybe as matto20v said I'm just too use to the power.

Thanks for the advice guys.
Reply With Quote
Reply

Tags
comparison, power

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
SEMA: Legacy Power Wagon Conversion is three tons of vintage American iron rss.feed General Subaru Discussion 0 01-11-2012 06:10 PM
Power Steering Issues FEWRIUS Mechanicals 7 06-03-2012 10:59 AM
Preventive maintenance: Power steering fluid flush and ATF Flush mao Evolution R 0 17-05-2011 01:56 AM
wrx sideways WRX01 Mechanicals 45 20-02-2007 02:25 PM
FS: Blitz Power Meter i-D waxdass For Sale 4 19-01-2007 10:29 PM



Welcome to Perth-WRX, click here to register!

All times are GMT +8. The time now is 04:32 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO