Header, Intake, & Exhaust Custom Exhaust? New Headers? Need Opinions on Intakes? Discuss making your ride breathe better here.

Is an SI exhaust any different?

Old 03-21-2012, 04:59 AM
ChristianL's Avatar
HCF Member
Thread Starter
Join Date: Dec 2011
Location: Maryland
Posts: 325
Default Is an SI exhaust any different?

While under the car this weekend, I noticed that my '97 probably will be shedding it's exhaust sometime in the next few months due to rust (and I get an occasional CEL for the cat, too).

So while sitting in traffic today, I was wondering if there are any advantages to the SI exhaust over, say, an EX one. Was it higher flow, tuned for sound, etc?

I realize I'll have to swap EVERYTHING over if I do an EX/SI exhaust swap, but was thinking there's probably more than a few SI exhausts out there that have been replaced and need a home. Plus, I'm not a big fan of huge exhaust tips, or the overly-loud sound I hear from a lot of cheap systems, and my engine will probably remain stock so I don't need large-diameter tubing, either.

Anyway, I've seen conflicting answers to this question, so I figured I'd ask here since you guys seem pretty knowledgeable about such things.

Old 03-21-2012, 06:38 AM
cvcrcr99's Avatar
Join Date: Aug 2007
Location: DUB Caeser
Posts: 7,186

I would suggest to compare part numbers of the axle back. If they are different, I would assume that is due to size as the 96-00 axle backs mount the same on all coupe and sedans.

I do not have direct experience with a SI exhaust, but I would assume it is about the same as the EX, which is 1 7/8" ID I believe.
Related Topics
Thread Starter
Last Post
Private 'Wanted' Classifieds
12-12-2007 09:18 AM
Mechanical Problems & Technical Chat
04-12-2007 03:28 PM
General Civic Talk
10-16-2006 09:56 PM
Private 'Wanted' Classifieds
07-22-2006 04:51 PM
Header, Intake, & Exhaust
05-09-2005 11:53 PM

Thread Tools
Search this Thread
Quick Reply: Is an SI exhaust any different?

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.