headers and high flow cats
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Safety Car
Joined: Dec 2004
Posts: 4,276
Likes: 8
From: Tucson AZ
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
CATs are necessary anywhere in this country, however even if we install the CATs thats included in the header system we are still breaking the law technically. Because the law states that for one, installing headers themselves moves the CAT to a different location other than where car maker validated the engines emissions standards at. Another law states that the CAT isn't to be replaced unless its defective, and then it has to be a OEM or equal peice. But that is just a technicallity.
Instructor
Joined: Apr 2007
Posts: 200
Likes: 0
From: Hawthorn Woods Illinois
You are right on, that's what I was told by my tuner.
Fran
P.S,
Thanks also for your insight and experience you have on the cars! I am a novice at these new cars with all the computers and such and you seem to put it all down so it's understandable. Very much appreciated here!
Fran
Moderator
Joined: Dec 2002
Posts: 40,896
Likes: 4,345
From: Lakewood Ranch, FL
Guys,
I had LT Kooks and the Hi-Flo cats installed on my '07 A6 and honestly I have not had, nor any of my family ever smelled anything at all. If I did not see them installed I would not know they are there....EXCEPT that I also had the Corsa Sport cat back exhaust installed as well at the same time and MAN, it sounds luverly. LOL
I am aware that they can indeed increase emissions, but it is my hope that the tuner can do some magic before the test. I had to do the same thing years ago with my '69 Hemi Charger (before the laws changed) and had to IMMEDIATELY change back to a more streetable tune. But seriuosly with about 2500 Summer and Fall miles since that work and NO smell whatsoever. Honest INJUN!
Fran
I had LT Kooks and the Hi-Flo cats installed on my '07 A6 and honestly I have not had, nor any of my family ever smelled anything at all. If I did not see them installed I would not know they are there....EXCEPT that I also had the Corsa Sport cat back exhaust installed as well at the same time and MAN, it sounds luverly. LOL
I am aware that they can indeed increase emissions, but it is my hope that the tuner can do some magic before the test. I had to do the same thing years ago with my '69 Hemi Charger (before the laws changed) and had to IMMEDIATELY change back to a more streetable tune. But seriuosly with about 2500 Summer and Fall miles since that work and NO smell whatsoever. Honest INJUN!
Fran
Instructor
Joined: Apr 2007
Posts: 200
Likes: 0
From: Hawthorn Woods Illinois
