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  #31  
Old 03-08-2010, 09:40 PM
biged6464 biged6464 is offline
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Default Re: gutting a cat

back to basics, i have a '02 XLT 3.0 and i am getting a "cat back" exhaust put in here in FL. I'm going w/ a 2.25" center inlet/dual 2" outlets in a Fflowmaster 50 Series Delta Flow. by crawling under and giving a quick visual, i see a TON of cats on the factory y pipes/headers, only 1 (the last) o2 sensor is visible, it's after the 2 cats on each factory header feed into a single pipe, then ONE MORE cat THEN a last o2 sensor THEN another cat then some pipe, then the factory muffler, etc. I at LEAST am going to remove the last cat after the last o2 sensor and replace that easily accesible o2 sensor i see while its in the air at the shop. can i or should I try and get rid of the cat just before the last o2 sensor and just have the cats on the factory headers and tap into the new tubing w/ the new Bosch o2 sensor i have??? or is that a disaster? i'm dead set on at the very least getting rid of the last cat downstream from the final o2 sensor, TOTAL OVERKILL!!! comments please, i'm new to the FORD family.....
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  #32  
Old 03-08-2010, 11:09 PM
00bamaranger 00bamaranger is offline
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Join Date: May 2009
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Default Re: gutting a cat

i think ill just let jp7 take this one haha

but yeah 4 cats for a 3.0 v6 is overkill
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  #33  
Old 03-09-2010, 11:25 AM
Jp7 Jp7 is offline
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Default Re: gutting a cat

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Originally Posted by 00bamaranger View Post
i think ill just let jp7 take this one haha

but yeah 4 cats for a 3.0 v6 is overkill
Pushrod engines have a harder time burning more of the fuel, so the catalysts have to do it. How many new cars these days are coming with pushrods? Everything is going to DOHC.
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  #34  
Old 05-31-2010, 11:35 AM
NastyZ06 NastyZ06 is offline
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Default Re: gutting a cat

The only reason why vehicles have cats is for emissions purposes to burn any fuel that was not burnt in the combustion chambers. You are not going to lose torque or gas mileage by removing the cats. All you are doing is removing restrictions in exhaust flow. Now if you removed all the cats as well as removing the muffler you may hurt the performance of your vehicle do to losing the scavenging capabilities you want from your exhaust setup. It has actually been shown repeatedly that you really dont lose or gain any significant power by removing cats.
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  #35  
Old 05-31-2010, 05:58 PM
TheStig TheStig is offline
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Default Re: gutting a cat

meow




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