High Flow Catalytic Converters

Reply Subscribe

Thread Tools

Search this Thread

Jan 6, 2005 | 08:51 PM

JohnS_77

Thread Starter

Melting Slicks

Joined: Dec 2000

Posts: 3,242

Likes: 0

From: Lexington, North Carolina

High Flow Catalytic Converters

I'm getting tired of putting my stock Catalytic Converter on once a year for inspection. This one looks pretty good. Anybody use one?

http://www.secureperformanceorder.co...e/powercat.cfm

Jan 6, 2005 | 11:13 PM

gr8whte

Team Owner

Joined: Oct 2004

Posts: 46,940

Likes: 2

From: Diesel smoke Makes me horny

St. Jude Donor '05-'06-'07-'08

Quote:

Originally Posted by JohnS_77

I'm getting tired of putting my stock Catalytic Converter on once a year for inspection. This one looks pretty good. Anybody use one?

http://www.secureperformanceorder.co...e/powercat.cfm

nope, straight pipes on my 78 and 82. just gotta pay the smog guy a little extra for his trouble,.....if ya know what i mean

Jan 6, 2005 | 11:17 PM

OneBrokenSmile07

Instructor

Joined: Apr 2004

Posts: 200

Likes: 0

From: Manahawkin NJ

I wish I knew your smog guy

Jan 7, 2005 | 02:23 AM

EVIL_GRIM

Racer

Joined: Jul 2004

Posts: 400

Likes: 1

From: California

Quote:

Originally Posted by gr8whte

nope, straight pipes on my 78 and 82. just gotta pay the smog guy a little extra for his trouble,.....if ya know what i mean

and who might you go through? i need someone to "double check" that my smog stuff is in running order.

Jan 7, 2005 | 02:40 AM

88'Cubka

Melting Slicks

Joined: Dec 2001

Posts: 2,321

Likes: 0

From: Reno NV

St. Jude Donor '08

my cat knocks down the HC's 800 ppm.....I HAVE to have a cat on to smog....it sucks very bad.

Jan 7, 2005 | 02:59 AM

redc3

Melting Slicks

Joined: Dec 2004

Posts: 2,161

Likes: 0

From: pr, frederick md.

high flo cats have been around for a while. dyno max makes a good one. with the exception of the 70, early 80's stuff, cats are really not all that bad. its more myth than reality. like batteries on concrete, its just not true! albiet for a race car, im sure they suck. but for the street? who knows? but go ahead and get hi-flow cat, as long as you THINK its working, its working, RIGHT??! luckily in md. we dont get inspected if we register as antique, or street-rod. i could run open headers as long as i didnt get caught for making noise

Jan 7, 2005 | 12:29 PM

markdtn

Le Mans Master

Joined: Aug 2003

Posts: 7,720

Likes: 12

From: Chattanooga TN

I had Walker hi-flow on my 89 IROC and I have them on my truck. Don't think they take much power away. Surely there is some tesing out there somewhere?

Jan 7, 2005 | 12:36 PM

CA-Legal-Vette

Race Director

Joined: Jul 2004

Posts: 12,696

Likes: 329

From: Scottsdale Arizona

Quote:

Originally Posted by markdtn

Surely there is some tesing out there somewhere?

You would think so, but i've never seen it. Very common in CA for people to have a "smog" system that they hook on to pass inspection and their daily system which is a lot like straight pipes. I'd love to have a system that would pass smog testing but could leave on all the time.

gr8whte's method is also not uncommon.