im in the market for some high flow CATS... im looking for more drivability and not a persistent check engine light. Ive been told that the High Flow CATS wake up the car when augmented with remapped ECU and intake. What is everyone running and their opinions or recommendations?

anyone have a used pair of high flow CATS they wanna sell?

 

i would like to know this too...

 

Shouldnt Fabspeed Cat-bypass pipes be the best?

 

200 cell is the way to go... best sound and quality are cargraphic or supersprint...

 

I second that. Had a buddy with 100 cell cats and was haunted by CELs. Go with the 200's.

 

I have 100 cell cats, never had a CEL.

 

Either one you need to remap the ECU for higher tolerance. I had 100 cell cats and had REVO reprogrammed it. Never had CEL.

 

which brand are you running?

 

I used Fabspeed.

 

I have the Cargraphic 200 cell cats, love the sound, very raspy!

 

I think I ordered them from FVD, but in the end after tearing off all the different layers of packaging, I believe that they were manufactured by Dansk. I don't know if I have much, if any, of the paper work left, but I can check. I have had the headers, mufflers and cats on the car for almost three years now and have never had a CEL. I did change out the O2 sensors (didn't know their condition, so I just figured I would put in new ones while I was tearing everything apart) and disconnected the battery, so maybe the ECU had to start up with baseline parameters and then just updated those parameters as it got more run time.