Stock Catalytic Converters question

mustangv600 · January 16th, 2010, 10:00 PM

Ok so as far as I know my car has 2 pre cats and one or two cats I was wondering if I replaced them all with one high flowing catalytic converter would I see any gains in gas mileage and or hp as well as replacing the O2 sensors at the same time would I see any gains anywhere I know this is like a $400 job and right now I dont have much money so itll probably be in spring but Im just curious

6ER THEN I 8ER! · January 16th, 2010, 10:31 PM

it'll flow better if thats what your asking...and it'll make the car sound better with a nice muffler...

goren813 · January 17th, 2010, 10:32 PM

If the stock cats are clogged at all, and/or the 02 sensors are faulty, you may see slight gains in mpg, however not in hp. You may hear a slight change in exhaust tone, but nothing too serious I imagine. For $400 just replace the entire system, if you need to pass emissions get a midpipe with hi-flow cats. Just putting them on the stock exhaust won't get you far.

January 16th, 2010, 10:00 PM	#1
mustangv600 Regular 2000 mustang v6 Join Date: Jun 2009 Location: reading Posts: 74 iTrader: 0 reviews	Stock Catalytic Converters question Ok so as far as I know my car has 2 pre cats and one or two cats I was wondering if I replaced them all with one high flowing catalytic converter would I see any gains in gas mileage and or hp as well as replacing the O2 sensors at the same time would I see any gains anywhere I know this is like a $400 job and right now I dont have much money so itll probably be in spring but Im just curious

January 17th, 2010, 10:32 PM	#3
goren813 MM's Official Lucifer '00 3.8L & '05 4.6L Join Date: Apr 2008 Location: Odessa, FL Posts: 3,620 iTrader: 0 reviews	If the stock cats are clogged at all, and/or the 02 sensors are faulty, you may see slight gains in mpg, however not in hp. You may hear a slight change in exhaust tone, but nothing too serious I imagine. For $400 just replace the entire system, if you need to pass emissions get a midpipe with hi-flow cats. Just putting them on the stock exhaust won't get you far. __________________ "Fast she goes...in the city of Overdose"

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January 16th, 2010, 10:31 PM	#2
6ER THEN I 8ER! Banned Join Date: Apr 2007 Location: Portland, TN Posts: 17,515 iTrader: 3 reviews	it'll flow better if thats what your asking...and it'll make the car sound better with a nice muffler...

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