Welcome to the North American Subaru Impreza Owners Club Wednesday July 23, 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 > Engine Management & Tuning

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 08-09-2004, 03:51 PM   #1
wrx2k4blue
Scooby Specialist
 
Member#: 59048
Join Date: Apr 2004
Chapter/Region: NESIC
Location: Burlington, MA
Vehicle:
2005 Black S60R
w/ 18" Modas & Sport Body

Default Cobb Accessport Stage 1 to Stage 2?

Is that simply getting a turbo-back exhaust? Would it have to be Cobb's turbo-back exhaust? Or a qualified one from a known list? With Stage 1, we obviously wouldn't need another AP right?

What sort of warranty/inspection issues are we looking at when we install an aftermarket turbo-back exhaust?
* Registered users of the site do not see these ads.
wrx2k4blue is offline   Reply With Quote
Old 08-09-2004, 04:14 PM   #2
Twisted STi
Scooby Newbie
 
Member#: 49025
Join Date: Nov 2003
Chapter/Region: NESIC
Location: back to school
Vehicle:
2004 STi
Platinum

Default

Doesn't have to be Cobbs. Good thing too, isn't that thing back-ordered several months? Don't quote me on this one either, but for some reason I was under the impression that all that is required for S2 is a downpipe, although the full TB is recommended.
Twisted STi is offline   Reply With Quote
Old 08-09-2004, 04:47 PM   #3
Jduke
Scooby Specialist
 
Member#: 29699
Join Date: Nov 2002
Chapter/Region: NESIC
Location: Northern, VT
Vehicle:
2005 Legacy GT Wagon
Red

Default

Quote:
Originally Posted by Twisted STi
Doesn't have to be Cobbs. Good thing too, isn't that thing back-ordered several months? Don't quote me on this one either, but for some reason I was under the impression that all that is required for S2 is a downpipe, although the full TB is recommended.
Yup all you need is a DP that eliminates the two cats after the Turbo and your good to go to S2
Jduke is offline   Reply With Quote
Old 08-10-2004, 02:33 AM   #4
AlanWRX
Scooby Specialist
 
Member#: 23067
Join Date: Aug 2002
Chapter/Region: TXIC
Location: Fort Worth, Texas
Default

Quote:
Originally Posted by wrx2k4blue
Is that simply getting a turbo-back exhaust? Would it have to be Cobb's turbo-back exhaust? Or a qualified one from a known list? With Stage 1, we obviously wouldn't need another AP right?

What sort of warranty/inspection issues are we looking at when we install an aftermarket turbo-back exhaust?
As far as warranty goes, it is a good idea to put your stock downipe back on if you have to take it in. It isn't very hard to swap out the downpipe, takes an hour or two. It really depends on what is wrong with your car when you take it in. Inspection depends on which state you are in. In TX they plug into your car and make sure you aren't throwing any CEL's. Cobb stage 2 gets rid of the cel when you install it. They also do a visual inspection, if they can't see any cats they won't pass you. I showed the guy the cat in the uppipe and he went ahead and passed me...
AlanWRX is offline   Reply With Quote
Old 08-13-2004, 10:14 AM   #5
Scorpion
Scooby Newbie
 
Member#: 67956
Join Date: Aug 2004
Location: Mansfield, Ma
Vehicle:
2007 WRX Wagon
Silver

Default

Quote:
Originally Posted by Jduke420
Yup all you need is a DP that eliminates the two cats after the Turbo and your good to go to S2
Is this true? Can I use my stock exhaust with an upgraded down pipe and go stage 2 without any problems? Can anyone vouch for this?
Scorpion is offline   Reply With Quote
Old 08-13-2004, 10:23 AM   #6
AlanWRX
Scooby Specialist
 
Member#: 23067
Join Date: Aug 2002
Chapter/Region: TXIC
Location: Fort Worth, Texas
Default

yes, Cobb says that it is better to get a full turboback but it will work fine with just the dp.
AlanWRX is offline   Reply With Quote
Old 08-13-2004, 10:35 AM   #7
Scorpion
Scooby Newbie
 
Member#: 67956
Join Date: Aug 2004
Location: Mansfield, Ma
Vehicle:
2007 WRX Wagon
Silver

Default

Quote:
Originally Posted by AlanWRX
yes, Cobb says that it is better to get a full turboback but it will work fine with just the dp.
What down pipe would be best, there are so many to choose from.
Scorpion is offline   Reply With Quote
Old 08-13-2004, 10:41 AM   #8
Marketresearch
Scooby Newbie
 
Member#: 35738
Join Date: Apr 2003
Vehicle:
02 wrx

Default

Quote:
Originally Posted by Jduke420
Yup all you need is a DP that eliminates the two cats after the Turbo and your good to go to S2
Almost true, you can just replace just the downpipe(2nd cat) and go to stage 2. The downpipe cat is the key part. Like it's been said the more you replace DP, 3rd cat, resonator, muffler to a free flowing part the better the car will run. (also well matched parts)

I have to say it, I'm a fan of of having least one cat in the house. High flow one
Marketresearch is offline   Reply With Quote
Old 08-13-2004, 11:12 AM   #9
AlanWRX
Scooby Specialist
 
Member#: 23067
Join Date: Aug 2002
Chapter/Region: TXIC
Location: Fort Worth, Texas
Default

Quote:
Originally Posted by Scorpion
What down pipe would be best, there are so many to choose from.
I have the Helix catless pipe. It is a bellmouth design and runs about $285 or so shipped. It is a nice piece.
AlanWRX is offline   Reply With Quote
Old 08-13-2004, 11:58 AM   #10
Scorpion
Scooby Newbie
 
Member#: 67956
Join Date: Aug 2004
Location: Mansfield, Ma
Vehicle:
2007 WRX Wagon
Silver

Default

I would like to keep the car as quite as I can so I figure the down pipe and the mid pipe cold be changed while retainign the stock muffler.

Also, I plan on reinstalling the stock airbox minus the silencer. Should I get that silencer delete elbow or just run the box as is?

I cant wait for my Accessport!
Scorpion is offline   Reply With Quote
Old 08-13-2004, 12:19 PM   #11
bluelinescooby
Scooby Newbie
 
Member#: 48881
Join Date: Nov 2003
Chapter/Region: South East
Location: Buford, GA
Vehicle:
2009 1125CR
1996 Neon ACR

Default

Quote:
Originally Posted by Scorpion
Also, I plan on reinstalling the stock airbox minus the silencer. Should I get that silencer delete elbow or just run the box as is?
You don't have to waste $$$ on a silly plastic elbow. Just hack the bottom of the silencer off and reinstall the top part if you like.
bluelinescooby is offline   Reply With Quote
Old 08-13-2004, 06:18 PM   #12
sdwrx
Scooby Newbie
 
Member#: 38227
Join Date: Jun 2003
Location: Austin TX
Vehicle:
2004 WRX Sedan
Platinum

Default

Quote:
Originally Posted by Scorpion
I would like to keep the car as quite as I can so I figure the down pipe and the mid pipe cold be changed while retainign the stock muffler.

Also, I plan on reinstalling the stock airbox minus the silencer. Should I get that silencer delete elbow or just run the box as is?
If you are a woosh addict, just seal your box to the fender and cover the other hole. If you want a little more subdued sound, get the very nice silencer delete elbow. It provides a nice smooth intake for cold air and retains most of Subaru's intake design (which they did their homework on). Hacking the silencer is an option, but then you can't return to stock if you decide you don't like the sound.
sdwrx is offline   Reply With Quote
Old 08-13-2004, 06:33 PM   #13
MO REX
Scooby Newbie
 
Member#: 52583
Join Date: Jan 2004
Chapter/Region: MWSOC
Location: St. Louis MO
Vehicle:
2002 WRX sedan
PSM

Default

Have any of you guys (with an egt gauge) ran stage 2 with just a dp. I would be leary of this without an egt gauge since the WRX has been known to run high egt's. I'm not saying you will definately run dangerously high egt's but I'm sure you would be running higher temps with just a dp than if you had a full tbe. I have heard of stock WRX's running 1600+ on cylinder 4.
MO REX is offline   Reply With Quote
Old 08-13-2004, 07:56 PM   #14
BOFslime
Scooby Specialist
 
Member#: 23845
Join Date: Sep 2002
Chapter/Region: South East
Location: Orlando, FL
Vehicle:
2015 On order
White

Default

Quote:
Originally Posted by MO REX
Have any of you guys (with an egt gauge) ran stage 2 with just a dp. I would be leary of this without an egt gauge since the WRX has been known to run high egt's. I'm not saying you will definately run dangerously high egt's but I'm sure you would be running higher temps with just a dp than if you had a full tbe. I have heard of stock WRX's running 1600+ on cylinder 4.
the Stock STi runs 1600+ at times, stock. Same with a TBE..
My AP gets here Tuesday, i'm hopeing EGT's go down. Either way, i'll let you guy's know.
BOFslime 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
Cobb access port from stage 1 to stage 2 johnnyyrocket420 Newbies & FAQs 9 03-05-2010 08:24 AM
WTB- Cobb Accessport v.1 or v.2 JOWANKEL MAIC Private Classifieds 5 09-03-2007 03:39 PM
WTB- Cobb Accessport v.1 or v.2 JOWANKEL Private 'Wanted' Classifieds 0 08-29-2007 10:19 PM
Cobb stage 1 to stage 2 today... adoinfl AccessPort 13 07-22-2007 02:57 AM
AccessPort Stage 1 to Stage 2 question... UltimateLurker Engine Management & Tuning 7 07-03-2005 04:48 PM


All times are GMT -4. The time now is 02:09 AM.


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.