Originally Posted by rgbpmp
Since we are on the subject of high flow cats.
I have a 95 gsr with about 62,000 miles, stock except for exedy clutch comptech sri and ice box. I just ordered a dc sports 4-2-1 header. I was wondering if i should go ahead and buy a high flow cat or not. I want a quiet exhaust like a rsr exmag. Would it be to my advantage to get a high flow cat or just save up for the exhaust. Thanks.
You're getting to the point where your stock cat may indeed be clogged up. There are really only two ways to tell: put the car on a dyno and if it makes a bunch less power than it's supposed to, or take it off the car and rip it apart (it can't be put together again). With a car of that age, it's not a bad idea to replace the cat anyway.