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Actually it is the opposite. The front are pre-cats or heaters and the rears are the ones that matter.
Originally Posted by ATC Crazy
Wrong. All 4 are 'real' cats. No such thing as "pre-cats" on these trucks.
Originally Posted by xtrford
Really?? I was under the impression the fronts were just there as heaters to burn off fuel from a cold engine start, and the rears were purely for emissions.
These FORDs use both a single-bed catalytic converter and a 3-way catalytic converter. The single-bed CC is 1st in the exhaust stream & uses rare metal catalysts to 'convert' most of the HC & CO. This allows the 3-way CC behind it to work much more efficiently at reducing NOx. A 2nd CC also greatly expands the capacity to remove excessive HC & CO during cold start & full load. The "3" refers to the additional rare metal catalysts needed to 'convert' NOx, a hard job, in part b/c N is ~78% of air.
FORD takes cats very seriously & gets high grades for CC design & quality. In the dubious pursuit of "bark a lil louder" it would be a pity to destroy a working CC & cut up the expensive head pipe assembly they're integral parts of.
Scrap metal values have declined, but even junk/banged up/clogged cats have impressive recycle value. The greedy local recycler was paying between $50-$100 each 2 weeks ago. I presume you've heard the stories about the phenomenal growth in thefts of CC's off of tall SUVs?
Originally Posted by preppypyro
Ive got all these cats sitting in a shed right now
I should sell em if they are that good
However, these facts combine: cats are required by law, new OEM cats are very expensive & there's a law against junkyards selling used cats - to make good used cats can have even more value. When someone is faced w/needing cats the choices range from; shell out big bucks & do it right, to, go the el cheapo route & have someone slap on cheezy, overpriced 'universal fit' cats. I'd much sooner find good used, probably for less. Being able to & ascertain if your cats are good & identify their application would greatly enhance your selling.
I sold a used '87 SAAB cat for $250 recently. They're flanged, so they bolt on/off & are straight thru, so you can see the honeycomb is good. This allowed me to easily experience w/cat & w/o cat a number of times on several different SAAB 900's, including 8V & 16V Turbos. Still have the 16V 'test pipe' out in the shop & still greatly prefer using cats.
I still recall when I used to get attacked for posting the valid reasons not to remove cats. Nice to see converts placing the dubious pursuit of sound into perspective & enthusiastically carrying water for performance, emissions, value & perhaps even the Federal Clean Air law that set penalties for removing cats.
You have a way of annoying people with your tone...as hard as it is to believe that over a keyboard. The attacks you speak of are your own refusal to admit that you might be incorrect with some of your info, and you will rant, rave, and draw out a thread to utter confusion .....believe it or not you are not always right. But I do agree with you on this subject about removing cats......
Really...??? A badly tuned chainsaw. ( I couldnt keep my mouth shut on this one). I guess my truck must really sound like **** huh? And I am pulling 15-16 mpg city.
I would much rather have a catted (if thats a word), muffled exhaust system on my street driven daily driver. You may think that yours sounds good. But have you ever had someone else drive it while you are outside the truck? You will hear it pop, crackle, rattle against the pipes, and droan when on the highway. You may be missing all these NOISES due to what Ford has done to improve NVH on your truck with sound deadening. Of maybe you just like chain saws?
Different strokes for different folks. I used to like all that noise too when I was younger, now I enjoy low end torque and decent MPG's.
Well, let me ask...how do you know? Youve ever done it? Ever known anyone whos done it? I highly doubt it. Your just a typical guy on here who thinks they know what they are talkin about cuz you have a friend of a friend of a friend whos brother did it. My truck does NOT crack, pop, or sound bad. I get compliments everywhere I go. And, believe it or not, I actually have stood outside my truck when other people (my GF everyday ) drive it, (imagine that) and I about nut my pants when I hear it. I'm sorry I like a good, healthy, mean sounding truck. Especially when Its mine.
And decent MPG's huh? I think 15-16 is pretty damn good with 35's with stock gears and a 5.4, dont you?? Wanna talk about low end torque? I guarantee my truck would smoke the **** out of yous any day of the week. Keep your "chainsaw" comments to yourself until you actually have some knowledge (or proof) about what your talking about.
Let me hear a truck that sound like a "badly tuned chainsaw".
EDIT----
I mean, Let me hear a Ford that sounds like a "badly tuned chainsaw". Hold on, there isnt one.... I will tell you though, take a s hitty and cut the cats and youve got a chainsaw. I have not heard a ford that has sounded bad yet. Cats or not.
I still recall when I used to get attacked for posting the valid reasons not to remove cats. Nice to see converts placing the dubious pursuit of sound into perspective & enthusiastically carrying water for performance, emissions, value & perhaps even the Federal Clean Air law that set penalties for removing cats.
I still don't fully agree with you. But I'm not going to get into another arguement like the past few threads. I simply posted some pro's and con's...from there, it's up to the OP to decide what to do. We're all adults on here (well...most members), and can make our own choices.
I was basing it more on the interior looks, and restrictive-ness (sp?) of the cat converter, rather than the elements it's made of. Any one cat under these trucks are just as restrictive (flow and sound) as the other three.
I met someone who was interested on Saturday for a test-drive. We talked about it and traded stories and whatnot. I told him all the good and bad...
He Emailed me yesterday wanting to know a final price.
He has a bunch of land in a neighboring county that he is building a hunting cabin on. Basically he wants a truck to haul materials, travel the trails he's cutting in the land, and other general truck duties.
So hopefully this will go through, because I really need the money for my Bronco, a welder, bike payments, and the 'Yota
Well, let me ask...how do you know? Youve ever done it? Ever known anyone whos done it? I highly doubt it. Your just a typical guy on here who thinks they know what they are talkin about cuz you have a friend of a friend of a friend whos brother did it. My truck does NOT crack, pop, or sound bad. I get compliments everywhere I go. And, believe it or not, I actually have stood outside my truck when other people (my GF everyday ) drive it, (imagine that) and I about nut my pants when I hear it. I'm sorry I like a good, healthy, mean sounding truck. Especially when Its mine.
And decent MPG's huh? I think 15-16 is pretty damn good with 35's with stock gears and a 5.4, dont you?? Wanna talk about low end torque? I guarantee my truck would smoke the **** out of yous any day of the week. Keep your "chainsaw" comments to yourself until you actually have some knowledge (or proof) about what your talking about.
Let me hear a truck that sound like a "badly tuned chainsaw".
EDIT----
I mean, Let me hear a Ford that sounds like a "badly tuned chainsaw". Hold on, there isnt one.... I will tell you though, take a s hitty and cut the cats and youve got a chainsaw. I have not heard a ford that has sounded bad yet. Cats or not.
ive had my back two cats cut off for a year now..going on 17k miles without the two back cats..never no light,no problems. alot louder and a bit quicker..just cut them off.and sell them.i got 125bucks for them.
Well, let me ask...how do you know? Youve ever done it? Ever known anyone whos done it? I highly doubt it. Your just a typical guy on here who thinks they know what they are talkin about cuz you have a friend of a friend of a friend whos brother did it. My truck does NOT crack, pop, or sound bad. I get compliments everywhere I go. And, believe it or not, I actually have stood outside my truck when other people (my GF everyday ) drive it, (imagine that) and I about nut my pants when I hear it. I'm sorry I like a good, healthy, mean sounding truck. Especially when Its mine.
And decent MPG's huh? I think 15-16 is pretty damn good with 35's with stock gears and a 5.4, dont you?? Wanna talk about low end torque? I guarantee my truck would smoke the **** out of yous any day of the week. Keep your "chainsaw" comments to yourself until you actually have some knowledge (or proof) about what your talking about.
Let me hear a truck that sound like a "badly tuned chainsaw".
EDIT----
I mean, Let me hear a Ford that sounds like a "badly tuned chainsaw". Hold on, there isnt one.... I will tell you though, take a s hitty and cut the cats and youve got a chainsaw. I have not heard a ford that has sounded bad yet. Cats or not.
I agree - I haven't done it on my truck but with only 2 cats and a Dynomax Super Turbo muffler, I wouldn't want to be any louder anyways. I have done it to Ford cars in the past and did not like the results. Maybe the Modular does sound good with no cats? ...
BUT... If you are implying that your truck would beat mine in a race with all that extra rotating mass, less gear and miracle power adder of a throttle body spacer... could beat my 5.4 with 3.73's, with the intake silencer removed, Diablosport tuner, and the exhaust mentioned above.... Then you must have some other REAL power adder or you are simply delusional.
I will restate though as to not go too far off topic - it is my OPINION that the cats should be left in place unless they are damaged. If they become damaged then they should be replaced with a stock or equivalent cat. I believe that it makes it easier to sell down the road anyways especially if your state does emmision testing or a visual for cats. Unless it is solely an offroad/race vehicle.
Whalebird, not " every harley guy" takes the mufflers off of their bike, alot of them have the Factory system in place. My 79 xlch1000 has baffled drag pipes on it. I like it that way because I'm hoping that the sound will alert the drivers around me that I am there in
their midst and not do something Stupid that will cause me injury. Unfortunately too many people behind the wheel have no clue as to what is going on around them. That said, I do agree that there is no performance gianto be had by removing the cats from a vehicle. Run a straight pipe if you need that much sound. My wife has an 86 mustang gt
with Thrush Turbo mufflers on it. Plenty loud inside the car, but nice and throaty without
being excessively loud outside. dan.
I agree - I haven't done it on my truck but with only 2 cats and a Dynomax Super Turbo muffler, I wouldn't want to be any louder anyways. I have done it to Ford cars in the past and did not like the results. Maybe the Modular does sound good with no cats? ...
BUT... If you are implying that your truck would beat mine in a race with all that extra rotating mass, less gear and miracle power adder of a throttle body spacer... could beat my 5.4 with 3.73's, with the intake silencer removed, Diablosport tuner, and the exhaust mentioned above.... Then you must have some other REAL power adder or you are simply delusional.
I will restate though as to not go too far off topic - it is my OPINION that the cats should be left in place unless they are damaged. If they become damaged then they should be replaced with a stock or equivalent cat. I believe that it makes it easier to sell down the road anyways especially if your state does emmision testing or a visual for cats. Unless it is solely an offroad/race vehicle.
I didnt say you couldnt have an opinion. Everyone is different and likes different things. And i agree with you also, if you got emissions/inspections i wouldnt do it either. But here in FL we dont have anything.
BTW- I dont have "less gears" than you and have quite a bit more than a throttle body spacer.
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