Which is louder
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Freshman User
Joined: Dec 2004
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Which is louder
I have a 93 f150 wi th the 2 cats on my exhaust, and it isnt quite loud enough. I was thinking about just cutting the second cat off but then i was wondering if it would be better to just take both off and put a high flow cat on instead. Which one would be louder the high flow cat or cutting of the second original cat.
Thanks for your help
Thanks for your help
Senior User
Joined: Jul 2004
Posts: 169
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not sure what engine ur running, but on my 302 i had a catback flowmaster 40 installed and it wasnt quite loud enough. i then cut off both cats and installed 1 high flow catco and the sound now is just where i want it. it has a nice deep idle and on takeoff it just roars. my family and friends say they can hear me coming from a few blocks away so i musta did something right. hope this helps
Laughing Gas
Joined: Sep 2003
Posts: 890
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From: small town, north dakota
On my F150 the second cat was gone when I got it, but I swapped out the muffler for a FM 40 si/do on it. It's not too quiet, but not overly loud either. You can hear it coming from a few blocks away. It could be a little louder for my taste, but it's not bad. I just wish it had a little more crackle.
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Freshman User
Joined: Dec 2004
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By the way i have a 302 with straight pipes and dualed out after the cats. but i f i was to just cut off the cat, can i just put on an exhaust clamp (do they leak) because i cant weld good at all.
Postmaster
Joined: Jun 2004
Posts: 2,665
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From: B/CS, Texas!!
It needs to be welded since the pipe going to the cat is 3"....unless your straight pipes are 3". (probably not).
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Senior User
Joined: Nov 2004
Posts: 102
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From: north carolina
just curious but if you cut off the second cat or take off both originals and replace it with a single highflow would the truck still pass emissions ?
Because i have a 96 150 with single to dual catback exhaust, and it sounds ok but i would like it to be louder.
Because i have a 96 150 with single to dual catback exhaust, and it sounds ok but i would like it to be louder.
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Posting Guru
Joined: Jun 2002
Posts: 1,214
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From: Rio Rancho USA
Particle-wise, yes, it will pass.
It will fail a visual inspection quicker than a Honda in a tractor pull. It came from the factory with 2, there had better be 2 there when the emissions guys checks it.
It will fail a visual inspection quicker than a Honda in a tractor pull. It came from the factory with 2, there had better be 2 there when the emissions guys checks it.
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Posting Guru
Joined: Dec 2003
Posts: 2,155
Likes: 3
From: Centerville, Iowa
They still will want two underneath there. Freakin green-team.
No cat's..just a pair of glasspacks to do my singing. I just bought a CD player and honestly..I don't know why. I just love hearing my truck. Course...gas prices....*whine*
No cat's..just a pair of glasspacks to do my singing. I just bought a CD player and honestly..I don't know why. I just love hearing my truck. Course...gas prices....*whine*
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Wisconsinford
1987 - 1996 F150 & Larger F-Series Trucks
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Apr 9, 2013 07:59 PM