Welcome to the North American Subaru Impreza Owners Club Monday December 18, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Normally Aspirated 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. 
Thread Tools Display Modes
Old 05-26-2003, 03:17 PM   #1
Scooby Specialist
Member#: 32779
Join Date: Feb 2003
Chapter/Region: South East
Location: The wilderness
'99 Tacoma

Default Could this be my power answer...

I'm pretty sure I found the answer to my N/A RS power concerns... My mods include Cobb Intake, Fidanza Lightweight flyweel, Nology spark wires, and ProECM chip. My car has always seemed sluggish for an RS with those mods, especially in the high revs. I'm pretty sure I found the answer though... I have what I believe is the stock exhaust from a Legacy L 2.2 on my car. The piping is either 1 3/4" or 1 7/8", but either way it isn't very large... and smaller than stock RS piping I belive. Anyone else think this might be the missing link to finding that little extra kick I've been missing?

Also, can anyone lay out some symptoms of a plugged catalytic converter for me? I think I might actually have one of those also...

* Registered users of the site do not see these ads.
Stime187 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 05-26-2003, 04:00 PM   #2
Scooby Specialist
Member#: 745
Join Date: Jan 2000
Location: Royal Oak, MI
2004 STi
Java Black Pearl


if you got the moola... might wanna check out these headers + hi-flo cat.


soopa shexy.

As for the exhaust... yah.. just find a 2.25" midpipe and some free-flowing can and you'll be straight. Remember, all these breathing mods compound on each other. My car's pretty fun with almost all ur mods. Just replace the ProECM chip with Cams.

wistful is offline   Reply With Quote
Old 05-26-2003, 06:43 PM   #3
Scooby Guru
Member#: 1847
Join Date: Jul 2000
Chapter/Region: Tri-State
Location: brokenmotorsports.com
Team Broken: V6 GF


running that stuff on a stock exhaust?

try upgrading just the cat back.

IIRC stock pipe size is 1 7/8ths

on a n/a scooby you shouldnt go any larger than 2.25

munkis is offline   Reply With Quote
Old 05-26-2003, 08:22 PM   #4
Scooby Specialist
Member#: 13745
Join Date: Dec 2001
Chapter/Region: MAIC
Location: Delaware
2015 STI


Nope, an exhaust even from the headerback isn't going to make a huge difference, maybe 10-15HP. But combine the exhaust with cams, and I think it will make a good difference. How much did the lw flywheel help out? I'm putting a Exedy Clutch and 13lb flywheel on my car this Sat, and I'm having some street cams installed the week after to satisfy me until I can save a ton of $$$ for my turbo project. Also, get some lw pulleys, they make a fairly noticeable difference. And going to 2.5" isn't a bad idea if you have a fairly modded N/A car..
joefocker20 is offline   Reply With Quote
Old 05-29-2003, 12:44 PM   #5
Scooby Specialist
Member#: 1182
Join Date: Mar 2000
Location: Ventura, CA


Stock exhaust piping is 1-7/8, so no worries about a Legacy exhaust on your car (Legacy is a bit longer, besides).

Plugged cat? Why would you think that? You'd have a CE light, most probably.

How many RSs have you driven? What were their mods, compared to yours, to make you think you're not getting "full" power?
Julian is offline   Reply With Quote
Old 05-29-2003, 09:56 PM   #6
Scooby Guru
Member#: 15543
Join Date: Feb 2002
Location: san francisco, ca
90BJ Legacy LS ABS
AWD 946 Rio Red Jpn built


I know the answer to your problem. Get rid of the Nology spark wires.
ciper is offline   Reply With Quote

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
Could this be where my pound and a half of boost are going?! JohnnyWas Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 3 05-31-2006 07:13 AM
I hate having 97423 fobs on my keychain! Could this be the solution? avatarr Car Audio, Video & Security 5 04-03-2005 10:46 PM
Could this be the source of my clunking problem? glsniper Brakes, Steering & Suspension 3 05-31-2003 10:07 PM
Could this be my clutch or flywheel? ImprezaWRX02 Transmission (AT/MT) & Driveline 2 04-05-2003 01:34 PM
Could this be the answer to the Ultimate in Subbie performance?(everyone please look) Rich L General Forum Archive 7 11-16-2000 09:04 AM

All times are GMT -4. The time now is 07:02 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.