i had a header and catback wen i took out my cat
it made a diff.
revs out easier, probly a hp or two
definitely louder
now my raptor is a little too loud on the freeway
sounds good revving tho
like an nice italian sports car
tired of hearing that yet?
:D :D
i had a xhaust cut out on my fiat
but it wuz the jc whitney $10 model
just a flapper valve in a cast housing
so it wuz a big xhaust leak and sounded bad
but open xhaust is fun
altho sounds like a tractor till you get higher in the revs

<_<
check out how it seals so you dun get ripped