High flow catalytic converter

[crownvic31]

Hello all

I am getting ready to install my texas speed engineering long tube headers on my 07 escalade. All I need is a pair of high flow cats as I do need to pass emissions in my state.

Any recommandations? brand, part #?

Thanks in advance

 

[iamdub]

Lol
Texas Speed + Speed Engineering?

They're all "high-flow". It's the style that's been used for decades. OEM is best- can you just have your originals cut out and welded into your new exhaust somewhere? If you need smaller ones, it's kind of a crapshoot with aftermarket. @swathdiver seems to have a great experience with his Magnaflow cats. I think the bullet style ones in the Kooks or American Racing long tubes are good, too. But, really expensive.

 

[swathdiver]

Hello all

I am getting ready to install my texas speed engineering long tube headers on my 07 escalade. All I need is a pair of high flow cats as I do need to pass emissions in my state.

Any recommandations? brand, part #?

Thanks in advance

If I were buying long tube headers and wanted cats, I would buy the y-pipe with cats from the header manufacture to make things fit seamless and simple. I think it's a can of worms when you go trying to piece together a catted y-pipe with long tubes. Done wrong, you can negate what you were shooting for, more horsepower.

 

[crownvic31]

@swathdiver
Bought the Texas speed headers used with the catless y-pipe for $100. I just need to have my guy weld in some cats. My OEM cats are done hence why I'm going to replace my exhaust manifolds. I was looking at the magnaflow bullets and also the flowmasters. They have several ones though. Just figured I'd ask and see whats being used

 

[mikeyss]

I have American Racing long tube headers, and they came with their y pipe and converters. I used that set up, but chopped the 'y' off since I have true duals. I failed emissions BADLY with their cats, so I bought the magnaflow California emissions spec cats and passed emissions test with flying colors. Best of all, I haven't experienced any power loss, and it quieted my exhaust down a bit - something I wanted anyhow.

 

[crownvic31]

I have American Racing long tube headers, and they came with their y pipe and converters. I used that set up, but chopped the 'y' off since I have true duals. I failed emissions BADLY with their cats, so I bought the magnaflow California emissions spec cats and passed emissions test with flying colors. Best of all, I haven't experienced any power loss, and it quieted my exhaust down a bit - something I wanted anyhow.

Good to know. Which magnaflows did you buy? Remember model #?

 

[mikeyss]

The price must have recently went up, I only paid $190 each

 

[crownvic31]

@mikeyss Thank you sir. While these wont work for my set up because they are to big, but atleast i know i can count on magnaflow. I will be going with magnaflows 54959 spun cat.

 

[Charlie207]

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.

 

[992dr]

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.