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FIRST OFF LET ME INTRODUCE MYSELF, I'M NEW TO THE FORUMS AND TO THE CIVIC. I RECENTLY BOUGHT A CRASHED 2008 2DR. EX-L WITH 4000k MILES AND I AM FIXING IT UP. MY QUESTION IS I NEED TO REPLACE THE CATALYTIC CONVERTER. BUT HONDA WANTS $580. I WANTED TO KNOW IF I CAN GO WITHOUT IT? I WILL BE KEEPING THE STOCK MUFFLER, AND DON'T WANT A LOUD EXHAUST, WILL THIS BE POSSIBLE? AND IF SO WHERE I COULD GET WHAT I NEED. I LIVE IN FLORIDA, AND WE DON'T HAVE EMMISSION TESTING SO THE MISSING CAT WON'T BE A PROBLEM. THANKS IN ADVANCE FOR THE HELP. JUSTIN

 
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I don't know what city you live in but here in Los Angeles we have a "Honda Only Junk Yard" here is there web site. I'm sure they'll mail one to you. I think you can drive the car with out the converter, but think about good old mother earth.

http://www.hondaonly.net/

 
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Thanks for the info. Just sent a parts inquiry.

 
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Has anyone tried emptying out the catalytic converter? What should i expect after doing this?

 
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Is there some sort of emissions warranty for 8th gens? 7th gens have something like an 80000 mile warranty on that stuff.

 
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weapon r makes a new exhaust manifold (which is where is where your cat is and o2 sensor )
go to weapon-r.com or just google weapon r exhaust's
you will retain back pressure and get better exhaust gas release flow.
Add an intake and you will possible gain about 8 to 10 hp
it is dynoed with just the exhause manifold showing a gain of about 6 hp
hope this helps ,
it is better than stock and only slightly louder
but better for fuel mileage