Stock cats any difference from 2002 vs 2003

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04-22-2012, 06:49 PM

Mustang_NTriangle

5th Gear Member

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Join Date: Nov 2006

Location: MA

Posts: 2,402

Stock cats any difference from 2002 vs 2003

Well in order to pass mass emissions I need a stock h pipe as my catted MRT won't work. My question is will a 2002 catted factory h pipe fit on a 2003?

04-22-2012, 08:02 PM

FlamingoGT

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Join Date: Sep 2009

Location: Jax FL

Posts: 442

yes. as long as you are comparing gt to gt.

04-22-2012, 08:41 PM

5sp04GT

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Join Date: Mar 2008

Location: Taxachusetts

Posts: 167

I live in mass as well and have had no problems passin emissions with my MRT catted h pipe. Why won't yours pass?

04-24-2012, 12:18 AM

FormlessGT

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Join Date: Feb 2012

Location: CA

Posts: 106

Quote:

Originally Posted by Mustang_NTriangle

Well in order to pass mass emissions I need a stock h pipe as my catted MRT won't work. My question is will a 2002 catted factory h pipe fit on a 2003?

I'm pretty sure 99-04 exhaust systems for the GT were identical throughout the years.