Catalytic Converter Removal???

hooper98 · Dec 1, 2011

I got a '98 Ford Ranger, 4.0ltr V6 I have done a bunch of mods on it, and finally got down to the sound of it. I bought a Flow-master 40 the aggressive blah blah blah blah blah....

Had 'er in and well... no sound?!?! I thought this was supposed to be the loudest SOB out there, so I took a closer look at my exhaust turns out I got 2 Catalytic converters one in front of the other, with a O2 sensor out of there...

Now I'm wondering if ditching the CAT/S will help with the sound at all and what are the negatives to doing it??

Can anyone help me out??

Thanks-

Hooper

country0001 · Dec 1, 2011

It will be highly recommended that you do not do this. You will probably be criticized heavily for wanting to remove the cats.

It will make it louder. Maybe too loud

adsm08 · Dec 1, 2011

I am so sick of people with 4 and 6 cylinder engines coming in here saying "I put all this money into my truck trying to make it sound like a Mustang, but it still doesn't. Will destroying the environment make my truck louder?"

You want it to sound like a muscle car? Go buy a muscle car.

lil_Blue_Ford · Dec 1, 2011

I predict this thread to be locked as soon as a mod finds it.

TRS does not condone removing cats because it is ILLEGAL.

Not to mention that you will get NO performance increase (you'll probably actually lose performance). The only way you will see a real performance increase would be if the cat is actually plugged up and bad (in which case you'll get the MOST benefit by REPLACING the cat).

Your 4.0L will never sound like a stroked V-8. Sorry to be the bearer of bad news.

The front "cat" on your truck is most likely a pre-cat.

I have a Flowmaster 40 series on my choptop and have the cat still on the truck. At idle it is not very loud at all. You can hear that it's running, but it's not really loud. But when you get on the throttle it gets louder (although you don't notice it so much because at speed, the sound is coming from behind you), but everyone tells me they can hear me coming in it. My F-150 came with a cherry-bomb glass-pack on it from the previous owner. With the stock tailpipe after it, it was quiet (6-cyl truck, 300-6 motor). When the tailpipe rotted off after the muffler and fell off, I put a turn-down on it and ran it. You could hear it then, but it wasn't overly loud. When the muffler rotted through and fell off, then it got loud - but it really sounded like crap with both no muffler and glass-pack.

The 2000 Ranger sitting in my driveway with a 5.0L V-8 tucked under the hood has a Magnaflow dual in - dual out muffler and dual 2.5" pipes - now that thing rumbles a bit and sounds very good. That's about the only way you'll get a GOOD loud sound out of a Ranger.

lil_Blue_Ford · Dec 1, 2011

adsm08 said:
I am so sick of people with 4 and 6 cylinder engines coming in here saying "I put all this money into my truck trying to make it sound like a Mustang, but it still doesn't. Will destroying the environment make my truck louder?"

You want it to sound like a muscle car? Go buy a muscle car.

You do have quite the way with words!

snoranger · Dec 1, 2011

Gotta_gofast · Dec 1, 2011

By nature, the cat heats up exhaust gases. Hot exhaust gasses are less dense and flow easier through a pipe than colder denser fluid. If I were to predict power levels, I would suggest the cat would produce slightly more power (minimally) and as an added benefit anyone following you in town on a summer day doesn't have watery eyes!

If you want to be loud and obnoxious (make everyone look at you like a retard and laugh because you genuinely believe your cool) why not run 6 zoomie headers out of the hood? You can throw a y-pipe on cylinders 2 and 5 so that you have 8 pipes coming through the hood (you know, just like a V8).

doorgunner · Dec 1, 2011

adsm08 said:
I am so sick of people with 4 and 6 cylinder engines coming in here saying "I put all this money into my truck trying to make it sound like a Mustang, but it still doesn't. Will destroying the environment make my truck louder?"

You want it to sound like a muscle car? Go buy a muscle car.

now....now, ads...do you need some of my meds....I remember years ago when you convinced me that removing my cat was a bad thing...True--I did get better performance because the 02 sensor was telling the computer to send 20% more gas to the engine causing my mileage to drop 4mpg.....and...after removong the cat, my eyes would burn badly & I'd get nauseated if I stood behind the truck for more than 20 seconds while it was idling...and the exhaust was a lot louder--even if it sounded like a V8 running on 5 cylinders......So what I did was (do not try this at home....I ran true duals with a proportional size cat on each exhaust....and my fav-o-rite "mufflers" on each exhaust---passed yearly emmisions test with flying colors...........sounded almost like a V8...and much better than a V6........................so then...............i put a V8 in it.....waaaaaaaaaaaaahahhahahhhahhaaaaaaaaa!

shane96ranger · Dec 1, 2011

This thread will soon be placed in this box

straycat · Dec 1, 2011

It is against the law to remove a cat, Bro. I have a Flowmaster 40 and it sounds great and has a really nice rumble and it is not supposed to be annoying. If you want to run around with the noisiest vehicle around...you are a complete idiot. Somebody may get pissed at you and shoot you dead. Enjoy the performance the Flowmaster offers and don't complain.

country0001 · Dec 1, 2011

I really think we need a sticky on the bads of removing cats.

James86 · Dec 1, 2011

How loud do you expect it to be? My 3.0 sounds fine with everything from the cats forward stock and a simple cat back. I never cared for glasspacks so I got a flowmaster 40, and if anything, its a bit too loud for me, especially on a cold day, but sounds decent to me.

03ranger30 · Dec 1, 2011

I have a flow 40 on my truck it sounds just fine, plus all that black smoke coming out the exhaust cause you don't have a cat looks bad, unless you have a diesel.

These engines don't produce enough power to benefit from removing the cats.

85_Ranger4x4 · Dec 1, 2011

I recommend a glasspack after the cats, I am running that setup x2 on my F-150... granted it has a V8 but it is a perfect balance between not too quiet and not too loud.

James86 · Dec 1, 2011

OK, curiosity now, how loud is everyone else's rangers with a flowmaster 40? Mine sounds like this:

http://www.youtube.com/embed/AWiynDOfHWk

Windows were up so what it sounds like is what it sounds like to me :dunno:

Catalytic Converter Removal???

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