Okay, I ordered a test pipe to replace my cat and the consensus seems to be that I wasted my money and should have just gone with a hi-flow cat because the test pipe will make me lose power, or at least torque. So here's my stupid question of the day. How come not having a cat doesn't affect older cars or non-import cars? Exhaust uses the same principles if i'm not mistaken no matter what vehicle it's on....so I guess I just don't understand how getting a less restricted flow through the exhaust could be a bad thing. Catalytic converters haven't been around forever and to my understanding are only an emissions device and that's it. I know my first car, a 61 Chev p/u didn't have a cat, it just had the pipes right back to the glass packs.

Again, i'm not arguing any facts what so ever, just trying to get a straight story...Thanks