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Old 05-28-2014, 06:49 AM   #1
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Clogged cats.

Dropped Grimace off at the Ford dealership last night to have his o2 sensors replaced because he was starting to hesitate, so they did their magic with their fancy machines and found that 3 of the 4 sensors weren't reading at all. Well they called me this morning to let me know that since he was running so rich for so long that my cats are now clogged. I had intentions on removing them anyway. So, if I just get them cut out will that keep my motor from seizing?
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Old 05-28-2014, 06:59 AM   #2
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Dropped Grimace off at the Ford dealership last night to have his o2 sensors replaced because he was starting to hesitate, so they did their magic with their fancy machines and found that 3 of the 4 sensors weren't reading at all. Well they called me this morning to let me know that since he was running so rich for so long that my cats are now clogged. I had intentions on removing them anyway. So, if I just get them cut out will that keep my motor from seizing?
Do you have to be smog certified in Georgia? If so, they legally can't remove them. Someone else on here, asked for the Pros and Cons of running without Cats.
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Old 05-28-2014, 07:05 AM   #3
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Do you have to be smog certified in Georgia? If so, they legally can't remove them. Someone else on here, asked for the Pros and Cons of running without Cats.
My last GT had all the cats cut out and still passed smog in NY. GA doesn't have smog requirements. I know the pros and cons. I have a friend who rebuilds mustangs for racing so he has a shop and he would be the one cutting them out and replacing the tubing and whatnot. Just wondering if taking them out will prevent my motor from seizing rather than buying new ones since I planned on taking them out anyway.
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Old 05-28-2014, 09:12 AM   #4
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Its illegal for any shop in any state to remove them because its a federal crime to do so. However, you will need MIL eliminators to keep your CEL from tripping once they are removed.
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Old 05-28-2014, 09:14 AM   #5
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I think I'm just gonna replace the exhaust all together. I was gonna do it anyway. Because these flowmasters are old. It's before they started stamping them, back when they were still using this crappy aluminum which just rusts quicker than the rotors on a rainy day. I'm so indecisive. Too many options. And you know how women are. We change shirts 17 times before going back to the first option we pulled off the hanger.
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Old 05-28-2014, 09:17 AM   #6
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They still use the same aluminized steel. Get a Magnaflow setup if you want a badass stainless setup that won't rust and just throw a UPR stainless catless H in there too. Stock manifolds are fine unless they are physically bad like rotting through.
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Old 05-28-2014, 10:44 AM   #7
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How good are these Pypes?
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Old 05-28-2014, 11:20 AM   #8
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The brand Pypes? Not very.
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Old 05-28-2014, 11:24 AM   #9
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Ok then.
Well point me in the direction of one that's gonna give me that DEEP rumble...without sounding like a redneck who removed his muffler lol
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Old 05-28-2014, 11:31 AM   #10
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Well it all depends what you like and what you consider a "deep rumble". Flowmaster is pretty distinct. Look up on youtube:

Magnaflow
Dynomax Ultra Flow
MAC
Bassani
Borla

And other flowmasters if you want to look at them again too.

There are some others. I mean the Pypes stuff sounds pretty good, the quality is crap though and they use cheap 304 stainless vs 409.
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Old 05-28-2014, 11:44 AM   #11
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Ok then.
Well point me in the direction of one that's gonna give me that DEEP rumble...without sounding like a redneck who removed his muffler lol
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Old 05-28-2014, 12:00 PM   #12
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I run flowmaster 40 series. Very little drone at any speed. Nice deep sound

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Old 05-28-2014, 12:07 PM   #13
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I've always really liked the Borla. Buuuuuuut my pockets aren't deep enough for those, especially since I'm about to fork out $1400 to replace these cams. (The labor alone on that job is killing me...price wise.) But I can't drive him like he is, and I can't just let him sit in the yard staring at me with those sad sad eyes just begging for me.
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Old 05-28-2014, 12:10 PM   #14
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That $1400 also includes the price for replacing the o2 sensors btw. Just didn't want y'all to think I was letting these fools take advantage of me lol.
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Old 05-28-2014, 12:10 PM   #15
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Lol If I remember correctly, the flowmasters were only like 300 installed. The borlas just don't get deep enough imo. I'll get flamed, but they are a little ricey sounding TO ME.

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Old 05-28-2014, 12:44 PM   #16
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Yeahh Flowmasters sound like crap to me. OP if you're looking for Borla's then check Amazon and Summit, they are significantly cheaper on there. This is the catback I'm running http://m.americanmuscle.com/maca99gt.html I think it sounds great and isn't deafening like the straight through mufflers are (with a an O/R mid)
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Old 05-28-2014, 01:12 PM   #17
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I like the pops that the catbacks give. That ish is sexy as fuuuuuuuu. I'm not necessarily looking for LOUD, but I still want to be able to FEEL the vibrations through the seat when I floor it, ya know? It's hard to tell through videos, because everything sounds different in person. I've been on the hunt for some sort of mustang crew in my area so I can actually talk face to face with someone about it and hear theirs and the difference in the others. You would think being that I'm next to a military base that it would be easy to find, but sadly, all these guys here are into the imports. Mustangs are in abundance here, but most of them are just daily drivers with no aftermarket mods. And teenage girls driving daddy's money.
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Old 05-28-2014, 01:32 PM   #18
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I agree, I like the gurgling and popping when I let off the gas on deceleration.

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Old 05-28-2014, 01:33 PM   #19
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Mine does that now, but not enough. I prefer when the pop is louder than the acceleration.
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Old 05-28-2014, 04:31 PM   #20
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I run flowmaster 40 series. Very little drone at any speed. Nice deep sound

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Maybe with the stock mid pipe. If you are running an aftermarket mid pipe and flowmaster 2 chambers you will have a TON of drone.

Again, I recommend Dynomax Ultra Flows. Nice mild tone at idle/off idle but you know its not stock. Deep mild tone when you are hitting the 2000-4000rpm range but if you really punch it they SCREAM. Magnaflows are similar.
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Old 05-28-2014, 09:42 PM   #21
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I've got flow 40's and a prochamber midpipe. I can attest that drone is there, but I don't mind it. That being said, I want to swap the 40's for some stingers.
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Old 05-28-2014, 09:45 PM   #22
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My ex is giving me the bbk shorty headers, bassani o/r xpipe, and two super 44 flowmasters that came off of our 03 gt
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Old 05-28-2014, 09:58 PM   #23
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Shorties are not really worth the effort to install but if the shop doing your cams is going to pull the manifolds for whatever reason then now would be the time to have it done. Just be aware that no shop is going to install an OR pipe. You are going to have to do that yourself or find someone who will do it on the side for cash.
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Old 05-28-2014, 10:10 PM   #24
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Shorties are not really worth the effort to install but if the shop doing your cams is going to pull the manifolds for whatever reason then now would be the time to have it done. Just be aware that no shop is going to install an OR pipe. You are going to have to do that yourself or find someone who will do it on the side for cash.

Well, if I took out the exhaust, removed the driveshaft, dropped the tranny and put it all back, I think I can handle installing a new exhaust kit period I'm not paying for these headers, they were mine to begin with on my 03. I'm having a friend of my brother's who rebuild mustangs for racing, and has for decades, put in the new camshafts Saturday. I'm sure he won't mind adding a few more bucks to his paycheck haha.
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Old 05-28-2014, 10:11 PM   #25
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This is just the setup I had to my 03, we'll see how it goes with the 96. I think he'll be fine.
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Old 05-28-2014, 10:12 PM   #26
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just poor paint thinner in your gas
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Old 05-28-2014, 10:34 PM   #27
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just poor paint thinner in your gas

Yeah because that sounds legit.....
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Old 05-28-2014, 11:21 PM   #28
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just poor paint thinner in your gas
I hope that was meant to be sarcasm.
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Old 05-28-2014, 11:31 PM   #29
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I hope that was meant to be sarcasm.

not at all -_-
I wouldn't do it to my car lol but works to clean the cats
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Old 05-29-2014, 01:21 AM   #30
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I think I'd rather replace them than attempt something like that.
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Old 05-29-2014, 01:23 AM   #31
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O/R H with Flow 44s sounds amazing. That's what I personally have and everyone I've encountered says that is what a Mustang should sound like. I can try to take a vid if I remember.
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Old 05-29-2014, 04:06 AM   #32
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not at all -_-
I wouldn't do it to my car lol but works to clean the cats
Cats cannot be cleaned out by pouring paint thinner in your gas tank. When burned, it produces the same byproducts as gasoline, which does nothing for cleaning out your cats. Also, paint thinner is mostly acetone which can break down and melt plastics. Your fuel pump happens to have plastic components. That was terrible advice to give someone.
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Old 05-29-2014, 04:50 AM   #33
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Scotty Kilmer, mechanic for the last 43 years does it
lol like I said... I wouldn't do It to my car but it can help
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Old 05-29-2014, 05:01 AM   #34
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I've watched his videos and the first thing that comes to mind is shady and cheap (not a good kind of cheap). I wouldn't even take my cheating ex-girlfriend's car to him for maintenance lol. The part where he takes the cat off and soaks it...maybe. Paint thinner in the gas tank...NEVER.
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Old 05-29-2014, 05:04 AM   #35
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if your that worried you can dilute it with 30% water
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