Mazda3 Forums : The #1 Mazda 3 Forum - View Single Post - dgross7's STF build thread
View Single Post
post #28 of (permalink) Old 09-19-2013, 02:58 PM
mazda3az
Grand Am Series
 
mazda3az's Avatar
 
Join Date: Jul 2011
Location: Arizona
Posts: 486
Garage
Since this is an STF build thread, please allow me to ask a related exhaust question. Didn't see anything on exhaust here yet.

I know that STF is allowed headers and such, but for those of us starting out "light", and perhaps doing just a muffler or cat-back, I've been told that the stock 2.0 engine exhaust pipe is 2.00" OD after the cat. True or false? Is the 2.3 engine after the last cat also this same size, or larger? Anyone know for sure?

If true, what good would a 2.25" cat-back system do? And therefore the 2.5" systems (different makers have different sizes). would be even less useful, right?

What I'm thinking .....is that to start out inserting a Magnaflow 2" muffler might be "good enough" initially for a "start-up" effort , until headers become part of my STF budget. Perhaps as good/functional as a $600 cat-back system.

Opinions?

Scott Meyers
2006 Mazda 3S Sport - Making it the best that it can be
mazda3az is offline  
 
 
For the best viewing experience please update your browser to Google Chrome
8