Pre-cat bypass vs. secondary cat bypass

[jmatta]

I have replaced the secondary cats with Fabspeed bypass pipes and installed a modified "PSE" type OEM muffler on my '02 S. This not only gives me the sound I was searching for, but feels stronger to me, as well; though I do not have dyno data to back this up. I really question how much, if any, there is to gain removing the factory manifolds/pre-cats and replacing them with headers on a street car?

Seems like more trouble than it's worth for a few HP (at most).


Edit* After reading the post again, if Jake recommends replacing the manifolds, there certainly must be merit, but I think I'll pass...not worth the hassle.