High flow catalytic converter

[crownvic31]

Magnaflow 59959 Metallic Spun catalytic converter.
Have used these for several vehicles and they are great.
I'm actually getting ready to use them on my 07.

What set up are you running? Long tubes? Do you require state inspection?

 

[crownvic31]

3" Catalytic Converter O2 High Flow for Late Models - Federal Emissions

Wholesale warehouse for performance and OE exhaust systems and components.

performance-curve.com

I've bought stuff from them over the last 15 years or so, and have had good luck with their cats previous cars.

I like the fact that the o2 bung is already on there. Another option here. Ive been holding off with buying the cats as im still looking for reviews.

 

[Charlie207]

I like the fact that the o2 bung is already on there. Another option here. Ive been holding off with buying the cats as im still looking for reviews.

I'd love to get a couple of these cats, and a set of headers from Speed Engineering, and see if it would work, but I doubt it'd fit in a 4wd chassis.

 

[crownvic31]

I'd love to get a couple of these cats, and a set of headers from Speed Engineering, and see if it would work, but I doubt it'd fit in a 4wd chassis.

Why wouldnt it fit?
My long tubes are going on a 4wd escalade. My mechanic will have to cut the y pipe of course to place in the cats. I dont see this being that difficult

 

[Charlie207]

Why wouldnt it fit?
My long tubes are going on a 4wd escalade. My mechanic will have to cut the y pipe of course to place in the cats. I dont see this being that difficult

No basis, I know plenty of 4wd have long-tubes, I'm just assuming it'd be a huge PITA for me to do it.

 

[crownvic31]

Does the distance between the o2 sensors and cat matter?

 

[Charlie207]

Does the distance between the o2 sensors and cat matter?

Great question. I don't know.

 

[992dr]

What set up are you running? Long tubes? Do you require state inspection?

My previous 2dr had Thorley Tri-Y headers and maggy cats.
Yes, I do require them. And they have to be in the stock location, though, I think this has changed recently but still need to have cats. And personally, I like how they sound. Unfortunately, these will be going on my stock manifolds on my 07 but I will be making a new Y-pipe and exhaust all out of 3" stainless.
I had turned down a 59956 cat which is originally 2.5" to a 3" to fit with LT headers because of the space it shortened the cat to almost 6".


I try to keep the O2 as close to the factory location as possible when necessary, otherwise you can get extension for them.

 

[992dr]

Forgot to post the pic of the cat haha

 

[iamdub]

Does the distance between the o2 sensors and cat matter?

I'd try to keep it as relevant to the OEM setup as possible. This includes the location of the cat, itself. The cat can't be too far downstream or it won't get hot enough to properly catalyze the exhaust and it'll soot up and clog.