premuffler vs cat by-pass?
Thread Starter
Racer
Joined: Sep 2006
Posts: 251
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From: Knoxville, TN
premuffler vs cat by-pass?
What is the real sound or performance difference between a euro premuffler and a cat by-pass? Anyone have a preference?
I am planning a SW chip, either premuffler or cat by-pass, and a M&K 1 in 1 out soon.
I am planning a SW chip, either premuffler or cat by-pass, and a M&K 1 in 1 out soon.
Track Day
Joined: Dec 2006
Posts: 19
Likes: 0
From: NJ
Originally Posted by gunlover05
What is the real sound or performance difference between a euro premuffler and a cat by-pass? Anyone have a preference?
I am planning a SW chip, either premuffler or cat by-pass, and a M&K 1 in 1 out soon.
I am planning a SW chip, either premuffler or cat by-pass, and a M&K 1 in 1 out soon.
Instructor
Joined: Nov 2003
Posts: 188
Likes: 0
From: Olney, MD
Pre-muffler
I have the FabSpeed pre-muffler and (still) a stock muffler on my '80 SC. I went with the pre-muffler (which, to my eyes looks like an old-fashioned Cherry Bomb - but in T-304 stainless) because I heard that the straight pipe cat bypass' often had obnoxious resonances. I'm pleased with the sound (mellow and not that loud) and what seems like slightly improved performance (FabSpeed claims 7 hp but I'm a skeptic).
If I had my druthers (and was willing to spend $1500+ to replace a perfectly functional exhaust system) it would be SSIs and the factory sport muffler - especially now that I'm "historic" and no longer have to go through emissions testing.
If I had my druthers (and was willing to spend $1500+ to replace a perfectly functional exhaust system) it would be SSIs and the factory sport muffler - especially now that I'm "historic" and no longer have to go through emissions testing.
