92 LT1 Exhaust Question
Thread Starter
Racer
Joined: May 2004
Posts: 263
Likes: 0
From: Oconomowoc WI
92 LT1 Exhaust Question
I am considering replacing my existing exhaust system soon. I currently have a stock setup with Magnaflows. (92 LT1 Auto coupe)
I am considering replacing the stock (original 100,000 miles) cats with high flow cats and following this with a chambered ss exhaust system such as the one sold by Sweet Thunder-
http://www.sweet-thunder.com/index.html
I have 3 questions:
1- How much interior resonance can I expect?
2- Will the high flow cats affect my ability to pass WI emissions testing? (sniffer on the tailpipes)
3- Are the new cats going to be prone to throwing a code?
I am considering replacing the stock (original 100,000 miles) cats with high flow cats and following this with a chambered ss exhaust system such as the one sold by Sweet Thunder-
http://www.sweet-thunder.com/index.html
I have 3 questions:
1- How much interior resonance can I expect?
2- Will the high flow cats affect my ability to pass WI emissions testing? (sniffer on the tailpipes)
3- Are the new cats going to be prone to throwing a code?
Thread Starter
Racer
Joined: May 2004
Posts: 263
Likes: 0
From: Oconomowoc WI
To my knowledge the original cats are still alright (100K miles on them tho), I just know that I do want to go with a chambered system and thought I would replace the original cats with high flow units to get better breathing as well as throatier sound- not to mention the aesthetic appeal of new ss cats...
Instructor
Joined: Mar 2005
Posts: 148
Likes: 0
From: Georgetown Ontario
I had this exhaust on my car(3") its sounds good. I dont recall much resonance,you may have to modify it slightly to use aftermarket cat depending on their length.I took mine off because I put longtube headers on and had an exhaust made up with an xpipe,I think I still have my old system behind my buddies garage, makes me think now,were it went 
