Welcome to the North American Subaru Impreza Owners Club Sunday April 20, 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 12-12-2006, 12:03 AM   #1
AcquaCow
NASIOC Supporter
 
Member#: 36838
Join Date: May 2003
Chapter/Region: MAIC
Location: Reston VA
Vehicle:
2000 RS, 2001 RSTi,
and a 2011 WRX hatch...

Impreza GC8 '04 RSTi 272whp/273wtq (dynojet) with 3" Stromung catback and SR K&N Typhoon, (No EM)

This is a pic of AaronWRX's completely stock '05 STi (I didn't baseline) vs my '04 with K&N Typhoon and a 3" Stromung catback. No engine management yet.



It's a bit rich between 3500 and 4900, you can sorta feel it on the road...

Guess it's time for some EM and a tune to really smooth it all out.

I should probably get a downpipe and midpipe before then no?

-- Dave
* Registered users of the site do not see these ads.
AcquaCow is offline   Reply With Quote
Old 12-12-2006, 12:08 AM   #2
nhluhr
John Wayne Toilet Paper
Moderator
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

Max boost?
nhluhr is offline   Reply With Quote
Old 12-12-2006, 12:13 AM   #3
AcquaCow
NASIOC Supporter
 
Member#: 36838
Join Date: May 2003
Chapter/Region: MAIC
Location: Reston VA
Vehicle:
2000 RS, 2001 RSTi,
and a 2011 WRX hatch...

Default

Quote:
Originally Posted by nhluhr View Post
Max boost?
Dunno, no gauges yet.

My roomate's AP said 14.8 with the stock catback, so I'll have to check again with the new catback.

-- Dave
AcquaCow is offline   Reply With Quote
Old 12-12-2006, 12:17 AM   #4
520hpsti
Scooby Specialist
 
Member#: 108965
Join Date: Mar 2006
Chapter/Region: MWSOC
Location: MI
Vehicle:
2005 Subaru WRX STi

Default

nice numbers. must be fun to drive!
520hpsti is offline   Reply With Quote
Old 12-12-2006, 06:27 PM   #5
FraudulentNeon
Scooby Newbie
 
Member#: 29108
Join Date: Nov 2002
Chapter/Region: BAIC
Location: Dublin, CA
Vehicle:
2002 Impreza WRX
WRB

Default

May not want to compare numbers from different days and cars. Especially with a 50% difference in humidity.
FraudulentNeon is offline   Reply With Quote
Old 12-12-2006, 06:40 PM   #6
SQC120
Scooby Guru
 
Member#: 39677
Join Date: Jul 2003
Chapter/Region: Tri-State
Vehicle:
2008 Land Rover
02 WRX

Default

Quote:
Originally Posted by FraudulentNeon View Post
May not want to compare numbers from different days and cars. Especially with a 50% difference in humidity.
teach a noob.
does humidity make a huge difference? (i am assuming yes)
how/why? what kind of difference?
SQC120 is offline   Reply With Quote
Old 12-12-2006, 06:40 PM   #7
nhluhr
John Wayne Toilet Paper
Moderator
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

SAE correction accounts for that difference. The difference, by the way, is a whopping 5% engine output.

Relative Hp for dave's run: 104%
Relative Hp for Aaron's run: 99%

Quote:
Originally Posted by SQC120 View Post
teach a noob.
does humidity make a huge difference? (i am assuming yes)
how/why? what kind of difference?
Yes, higher humidity means less power. This is because the humidity is actually gaseous water dissolved in the air. So for a given volume of air, if you have a lot more humidity in it, that means less of the rest of the components of air (most importantly, oxygen). So more humidity = less oxygen = less power.

You can plug in various atmospheric conditions to this SAE Conversion calc to see what kind of hp difference you can expect from various levels of humidity:
http://wahiduddin.net/calc/calc_hp.htm
nhluhr is offline   Reply With Quote
Old 12-13-2006, 11:08 AM   #8
micropro_wright
Scooby Newbie
 
Member#: 45391
Join Date: Oct 2003
Location: Carson Valley, Northern Nevada
Vehicle:
2005 STI & FXT
White/Black

Default

Nice graphs...some of the only ones that actually label each curve, and are readable...A/F chart is nice addition .

Wonder where the power came from, I have seen a number of posts where cat back only did not add much, if any. 30 hp incr is a nice bump....
micropro_wright is offline   Reply With Quote
Old 12-13-2006, 12:37 PM   #9
AcquaCow
NASIOC Supporter
 
Member#: 36838
Join Date: May 2003
Chapter/Region: MAIC
Location: Reston VA
Vehicle:
2000 RS, 2001 RSTi,
and a 2011 WRX hatch...

Default

Quote:
Originally Posted by micropro_wright View Post
Nice graphs...some of the only ones that actually label each curve, and are readable...A/F chart is nice addition .

Wonder where the power came from, I have seen a number of posts where cat back only did not add much, if any. 30 hp incr is a nice bump....
Yeah, we definitely think it looks a bit high for the mods I have.

When I get a downpipe, i'll have to check the stock cat's for any kind of modifications...

The car certainly doesn't smell catless and it doesn't shoot fire between shifts, so I dunno where the power is coming from.

I do have the breather hoses bypassed and not bolted to the IC, but I don't think that adds any power.

Injectors/turbo are both stock and I'm running stock boost.

We'll see.

-- Dave
AcquaCow is offline   Reply With Quote
Old 12-15-2006, 11:05 PM   #10
AcquaCow
NASIOC Supporter
 
Member#: 36838
Join Date: May 2003
Chapter/Region: MAIC
Location: Reston VA
Vehicle:
2000 RS, 2001 RSTi,
and a 2011 WRX hatch...

Default

I installed a boost gauge tonight to check on the boost levels...

It never even hits 15psi...so I'm still running stock boost. *shrug*

That's still an odd amount of power.

-- Dave
AcquaCow 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: MO 3" Stromung catback exhaust $350 itslogics Engine/Power/Exhaust 10 03-04-2007 11:28 AM
anyone with an egt gauge and a k&n typhoon sri read MIKENICE456 Factory 2.0L Turbo Powertrain 8 01-30-2007 05:38 PM
3" Stromung Catback. file_id SCIC Private Classifieds 18 07-31-2006 02:28 PM
SoCAL: 3" Stromung Catback Dual Tip file_id Private 'For Sale' Classifieds 13 07-27-2006 03:47 PM
FS: 3" stromung catback single tip dizzysti Private 'For Sale' Classifieds 33 04-08-2006 12:31 PM


All times are GMT -4. The time now is 06:04 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.