[Mase123y]

Hey guys. Ive been reading this forum for Headers advice and instead of bumping an old topic I'll make my own for my questions.

My questions are about headers, cat/catless, sound and emissions.

1. I feel like my emissions concerns will end up with you guys replying with "just use your stock header" but will you most likely fail your emissions test by replacing your stock header with an aftermarket header w/ a cat? Will a tune with OFT do anything for the emissions test?

2. Going with an aftermarket header what is the obvious difference in sound between a cat and catless? Are they the same sound just a decibel difference? Does the catless have more rasp or again is it just a decibel difference?

3. I'm looking for more of a sound difference over stock rather than a power gain. UEL headers have the rumble that I desire but does a cat vs catless have a difference in rumble or again is it just a decibel difference?

4. So I enjoy the rumble of UEL headers and a bit of rasp at the higher RPMs. Does changing the catback exhaust do the most for changing the rasp sound and the sound overall? Would I be correct in saying that the UEL headers give you the rumble and a different catback exhaust for a rasp and louder sound or no?