What about the cross over pipe, some call it an X pipe. The piece of pipe that connects the left an right bank together to equlize the pressure and incerase scavenging. My 2001 silverado HD has 2 converters into 1 muffler that combines the left and right. I am told that if I run duals from the cats back I have to install the "X" pipe or it will not perform correctly. Anyone tried it with and without this cross connect pipe?
CPL holder since 1991, NRA Lifetime Member, DU Member, NICET certified
"For those who would give up essential liberty to purchase a little temporary safety, deserve neither Liberty nor safety.—Ben Franklin.”