302V8F150

Hello all,
New member here, well first I was wondering if 96 f150's only had one cat (the pre cat) and then the resonator after that. I was looking under my truck and thats all I'm seeing.
Secondly I was wondering if I could replace both of those with a magnaflow pre-cat and a magnaflow high flow spun metallic without issues of a CEL. As of now I have a flowmaster 2.5 cat back system with dual outlets and its extremely quiet. I was just looking to get rid of the restrictive factory cat and resonator, make the truck sound nice, deep, and throaty, for a cheap price. Perhaps somebody has some knowledge that could help me here

I'm aware high flow cats run $70-$100 a piece.

Thanks for any help

rexter

If you just want to change the sound, do what the p/o of my truck did. Leave everything factory back to the cat. Cut off the rest. Weld on a small length of pipe with a 12" long cherry bomb and enough pipe after that to go just past the back of the cab to pass inspection. It has a nice deep rumble.

I may run it back to the bumper, though. My 50yr old ears enjoy the peace and quiet.

Lazarus-F150

Great question! I'll be interested to see what is said. I have a 92 with a Flowmaster cat-back system and I have trouble believing that a 24 year-old factory cat is still functioning properly and would be interested to replace it if it won't make the computer go nuts.

302V8F150

I want to get rid the of the restrictive factory cat and resonator regardless. The flowmaster cat back I have now is way too quiet which doesn't make sense to me. I've thought of glass packs but I'm not a big fan of their sound. Just looking to see if anybody knows if the CEL will come with a high flow cat and possibly a resonator delete

sdmartin65

As long as you get the correct spun cat for the application it will be fine. Those are carb certified, they do the same job just more affectively in a smaller package. You'll like the sound without the factory cats, they muffle a lot of sound especially if your truck is California emissions compliant.

Lazarus-F150

What do you mean by, "correct spun cat"?

sdmartin65

Meaning correctly sized for the application. Too small and it will burn out, too big and it won't ever fire up. I know installers can help with the setup, I also believe Magnaflow has a help line.

Lazarus-F150

Thanks, I thought that's what you meant but wanted to be sure.

302V8F150

I don't think the magnaflow metallic spun cats have various sizes. I think they just have one size for the spun cats. Now the non metallic universal cats have a few sizes, one if engines up to 4.2l and a larger oval one for engines up to 6.8 I do believe.
I saw the two sizes in my summit racing catalog yesterday so thats the only way I knew that