straight piping
 

im a little confused cuz ive heard both. when straight piping do you run your pipe from the cats all the way out with a tip on it? or do you run it from the cats to your stock muffler?

removing all resinators [cats]u have to run a muffler or u'll have back perssure problums but if u tack off the cats u'll have a cheak engine lite and its not street legle