hi-flow cats...?

First of all, would putting a hi flow cat on a car with no other exahust upgrades do anything? even 1hp? better sound?

Is there one that has been proven to show the best numbers already?

I found these on eBay and wondered wich would have the best features for the money, and if all of them would fit with a OEM system for now and aftermarket in the future.

(I know some of these are ended, but they should still be around)

HIGH FLOW CAT ACURA INTEGRA 90 - 01 RS LS GS
# 1

Hi Flow Cat Converter 90-93 INTEGRA 91 92
# 2

ACURA INTEGRA 90-93 GS/RS/LS HI HIGH FLOW CAT CONVERTER
# 3

OBX High Flow Cat for 90-93 Acura Integra RS/LS/GS/GSR
# 4

90-93 INTEGRA HIGH HI FLOW CAT CONVERTER + 91 92
# 5

please run a search. this topic has been discussed many many times before.

http://www.g2ic.com/forums/showthread.php?t=103943&highlight=flow+cats

http://www.g2ic.com/forums/showthread.php?t=96883&highlight=flow+cats

http://www.g2ic.com/forums/showthread.php?t=92783&highlight=flow+cats

http://www.g2ic.com/forums/showthread.php?t=92381&highlight=flow+cats

http://www.g2ic.com/forums/showthread.php?t=80346&highlight=flow+cats

http://www.g2ic.com/forums/showthread.php?t=65777&highlight=flow+cats

http://www.g2ic.com/forums/showthread.php?t=18064&highlight=flow+cats

http://www.g2ic.com/forums/showthread.php?t=15267&highlight=flow+cats

and putting a hi-flow cat on an otherwise stock engine will do nothing for you unless your stock oem cat is clogged. please run a search next time. these common questions have been answered many times.