Originally Posted by imnot4n
Is there a tremendous difference between oem cat converters and high flow cats? I know there is differences in various setups, Im speaking in terms of my puny NA D16zzzzzzzz6. I want to get a cat because im tired of my 3ARacing fart can I have now. No cat + $100 AutoZone Muffler = ticket. SO im looking to get a cat, (oem or high flow) and prob an Apexi world sport exhaust or a Flowmaster 50 series or something similar. PEACE EASY
You won't see much of a difference.
The Honda OEM cats are not very restrictive to begin with, so a high flow cat or test pipe will not yield much, if any, horsepower gain. In your case, a nice catback with proper resonators with a high flow cat would quiet things down a whole lot.