[steve00s]

I put the secondary cats back on yesterday and most of the original sound that I love is back. The cats do filter high frequency tones and give the exhaust a deeper, lower growl. I doubt I'll loss any HP gains from the headers by putting these back on. I think I am satisfied for now.

What I have learned:
Bypass pipes were good.
Headers were good.
Bypass pipes and headers not so good.
Headers better than bypass pipes.
Bypass pipes for sale.