3 CAT replacement
Thread Starter
Heel & Toe
Joined: Aug 2013
Posts: 16
Likes: 0
From: CO
3 CAT replacement
I know there a plenty of threads on this, anyone replace the 3 CAT systems with a single Cat on a stock 89? I live in CO and we have emissions test, I was wondering the results you had with emissions and testing. Also how the performance differed from the 3 CAT’s I am looking at Flow master Manufacturer's Part Number: 2010028 with 3” as a replacement for the original stock setup.
Thanks
Thanks
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Replace the original car and ditch the pup cats. You'll be fine assuming the car is in otherwise good condition and tune.
The pup cats are for emissions at start up which is not something the states test for. Other than a little more noise, you won't see/feel any performance gains. The little cats simply aren't that restrictive.
The pup cats are for emissions at start up which is not something the states test for. Other than a little more noise, you won't see/feel any performance gains. The little cats simply aren't that restrictive.
