Welcome to the North American Subaru Impreza Owners Club Saturday September 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 Technical > Normally Aspirated with bolt-on Forced Induction 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.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 04-13-2002, 02:10 AM   #1
Andrew
Scooby Specialist
 
Member#: 1170
Join Date: Mar 2000
Chapter/Region: BAIC
Location: San Jose, CA
Vehicle:
2005 STi
White

Default Just curious, how much would an equal length header help us?

what it says up there. just wondering the type of performance gain we could, on average, see for the average kit (is there such a thing )
* Registered users of the site do not see these ads.
Andrew is offline   Reply With Quote
Old 04-13-2002, 03:28 AM   #2
Aphex
Scooby Specialist
 
Member#: 146
Join Date: Aug 1999
Location: Wahcheeta, KS
Vehicle:
'05 Legacy GT
Silver

Default

yeah what he said. also, I've got a few V8 friends that make their own headers, would it be possible to mock up an equal length kit similar to the syms and get performance gains? or would the inexactness of our crude measuring and bends cancel out any good a properly engineered header would make.

eli
Aphex is offline   Reply With Quote
Old 04-13-2002, 12:16 PM   #3
kastle
Frank Army
 
Member#: 1457
Join Date: May 2000
Chapter/Region: SWIC
Location: Phoenix, AZ
Vehicle:
1999 Outback Sport
Steel Blue Mica

Default

I have used the Borla Headers (not equal length) on my RS-T prior to going RS-TT, and now that it is RS-T again, I will be putting a set back on. Biggest gains that I could see were greatly reduced EGT's... about 200 degree's on average.

NOTE - My EGT probe is placed in the collector, not in the #3 header as most others are.
kastle is offline   Reply With Quote
Old 04-13-2002, 01:03 PM   #4
Impreza Rider
Scooby Specialist
 
Member#: 756
Join Date: Jan 2000
Chapter/Region: MAIC
Location: Ashburn, Va
Vehicle:
2003 Legacy L wagon
2009 Kawasaki C14

Default

Why no RS-TT anymore?
Impreza Rider is offline   Reply With Quote
Old 04-13-2002, 04:38 PM   #5
kastle
Frank Army
 
Member#: 1457
Join Date: May 2000
Chapter/Region: SWIC
Location: Phoenix, AZ
Vehicle:
1999 Outback Sport
Steel Blue Mica

Default

I don't want to hijack Andrews thread but the turbo's on the prototype kit were hunting against each other and Robert determined that he needed to create a new throttlebody for the car... He is planning on doing some more engineering on his car before he sells the kit.
kastle is offline   Reply With Quote
Old 04-14-2002, 01:10 AM   #6
5252
Guest
 
Member#:
Default

Prototyping velocity dynamics is a cake walk on a flow bench and a chassis dyno. At least for motorcycles. Fun too
  Reply With Quote
Old 04-14-2002, 09:18 PM   #7
STiTuner
Scooby Specialist
 
Member#: 5778
Join Date: Apr 2001
Chapter/Region: South East
Vehicle:
09 135i
Jet Black

Default

The WRX guys said they were loosing a lot down low. would that apply to us too?
STiTuner is offline   Reply With Quote
Old 04-14-2002, 11:53 PM   #8
KillerTHC
Scooby Specialist
 
Member#: 4942
Join Date: Mar 2001
Chapter/Region: BAIC
Location: Palo Alto, CA USA
Vehicle:
01 SRP 2.5 RS-T
Ludespeed Stage 3 Link'd

Default

Quote:
Originally posted by kastle
I don't want to hijack Andrews thread but the turbo's on the prototype kit were hunting against each other and Robert determined that he needed to create a new throttlebody for the car... He is planning on doing some more engineering on his car before he sells the kit.
what is "hunting against eachother"?
KillerTHC is offline   Reply With Quote
Old 04-14-2002, 11:57 PM   #9
Andrew
Scooby Specialist
 
Member#: 1170
Join Date: Mar 2000
Chapter/Region: BAIC
Location: San Jose, CA
Vehicle:
2005 STi
White

Default

i think he means that they were making unequal boost, which wouldnt be the best in a twin turbo setup.

anywyas, STiTuner, wehre did you read that? i would be interested to see the thread that was discussing it. i know a local place that could make up some custom headers but i wouldnt consider it if its not that great for us. i woudl think that it would allow for better flow resulting in better lag and more power all over the place....but what do i know? im not an engineer.
Andrew is offline   Reply With Quote
Old 04-15-2002, 09:42 AM   #10
STiTuner
Scooby Specialist
 
Member#: 5778
Join Date: Apr 2001
Chapter/Region: South East
Vehicle:
09 135i
Jet Black

Default

I'll see if I can find the thread... I think iit was actually in the classified at one point. The way I see it is though that there are too many turns in them making it more restrictive. Also I would imagine that a great deal of the problem would come from the collector style or pipe diameter.

Brad
STiTuner 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
WTT : Gruppe-S Coated Un-Equal Length Header for a Non-Ebay Equal Length Header Gamers MAIC Private Classifieds 2 10-07-2009 08:30 AM
JDM equal length header for US Sti? WRX-72 STi Forum Archive 1 08-08-2003 11:12 PM
Equal length Header VS Non Equal Length Header setiawani Factory 2.0L Turbo Powertrain 7 07-13-2003 05:33 PM
2.2 guys-Poll: let Brullen know we want an equal length header imposter Normally Aspirated Powertrain 4 11-10-2001 05:53 PM
Just curious, How much money... kAn9ArOo General Forum Archive 5 09-09-2000 07:25 PM


All times are GMT -4. The time now is 05:37 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.