2000 Catalytic Converter Question

JackalAR · January 23, 2010

Anyone have pics / description of the factory cats? I would imagine they're your standard high flow honeycomb style, but something is keeping the sound down significantly and unless it's the boat anchors, it has to be the cats. Considering a swap to Maggie Spun Cats. Thanks!!!

Nytemare · January 23, 2010

Anyone have pics / description of the factory cats? I would imagine they're your standard high flow honeycomb style, but something is keeping the sound down significantly and unless it's the boat anchors, it has to be the cats. Considering a swap to Maggie Spun Cats. Thanks!!!

What are you running for a muffler?

I run a Flowmaster super 44 and its anything but quiet.

the stock cats are high flow units...yes.

2000DV4.8 · January 23, 2010

Anyone have pics / description of the factory cats? I would imagine they're your standard high flow honeycomb style, but something is keeping the sound down significantly and unless it's the boat anchors, it has to be the cats. Considering a swap to Maggie Spun Cats. Thanks!!!

Yup, they look just like you described.

I've got the spun cats on mine, but I only replaced them because the OEM cats were bad after 180/185k. There was a noticeable sound increase, no performance increase, and a decent mileage increase.

I'd only replace them if your current ones aren't functioning properly.

JackalAR · January 23, 2010

It's the 4x9x14 case... the 11" wasn't available in 3" i/o.

Nytemare · January 24, 2010

It's the 4x9x14 case... the 11" wasn't available in 3" i/o.

Flowmaster????

What series?

What engine do you have...

I mean...if you want it loud....Flowmaster 40's or 44's are about as loud as cans come...you can go to glass packs if you want really loud and obnoxious.

I dont really know how loud you expect your truck to be....

JackalAR · January 24, 2010

My bad, I thought I said in the OP. It's a Magnaflow. My first actually. Sounds good, but pretty tame. I took a 3 hr. trip today so it broke in and got a little more aggressive. I think I can live with it. I F150 is effin' LOUD. Stainless longtubes, Maggie Spun-cats, OBX ss exhaust pipe, 12"-14" Dynamax Bullet to 4" turn-down

Nytemare · January 24, 2010

My bad, I thought I said in the OP. It's a Magnaflow. My first actually. Sounds good, but pretty tame. I took a 3 hr. trip today so it broke in and got a little more aggressive. I think I can live with it. I F150 is effin' LOUD. Stainless longtubes, Maggie Spun-cats, OBX ss exhaust pipe, 12"-14" Dynamax Bullet to 4" turn-down

Yeah...Magnaflow is pretty quiet...but a lot less drone than a Flowie or glasspacks.

Headers will help you get a little louder.

Cats...well unless you chop them out...its still a chamber that will reduce sound.

Smaller tail pipes will give you a louder sound...if you went with a 2.5" tail you would be a little higher on the db scale...but it would be a higher pitch...the large pipes give you a deeper more mellow tone.